20890401280

素因数分解:

$2^9\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{643}}^1$

素因数の和:724

約数の個数: 320

約数和(自身を含む): 60083654400

約数和(自身を除く): 39193253120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 64, 70, 74, 80, 98, 112, 128, 140, 148, 160, 185, 196, 224, 245, 256, 259, 280, 296, 320, 343, 370, 392, 448, 490, 512, 518, 560, 592, 640, 643, 686, 740, 784, 896, 980, 1036, 1120, 1184, 1280, 1286, 1295, 1372, 1480, 1568, 1715, 1792, 1813, 1960, 2072, 2240, 2368, 2560, 2572, 2590, 2744, 2960, 3136, 3215, 3430, 3584, 3626, 3920, 4144, 4480, 4501, 4736, 5144, 5180, 5488, 5920, 6272, 6430, 6860, 7252, 7840, 8288, 8960, 9002, 9065, 9472, 10288, 10360, 10976, 11840, 12544, 12691, 12860, 13720, 14504, 15680, 16576, 17920, 18004, 18130, 18944, 20576, 20720, 21952, 22505, 23680, 23791, 25088, 25382, 25720, 27440, 29008, 31360, 31507, 33152, 36008, 36260, 41152, 41440, 43904, 45010, 47360, 47582, 50764, 51440, 54880, 58016, 62720, 63014, 63455, 66304, 72016, 72520, 82304, 82880, 87808, 90020, 94720, 95164, 101528, 102880, 109760, 116032, 118955, 125440, 126028, 126910, 132608, 144032, 145040, 157535, 164608, 165760, 166537, 175616, 180040, 190328, 203056, 205760, 219520, 220549, 232064, 237910, 252056, 253820, 288064, 290080, 315070, 329216, 331520, 333074, 360080, 380656, 406112, 411520, 439040, 441098, 464128, 475820, 504112, 507640, 576128, 580160, 630140, 663040, 666148, 720160, 761312, 812224, 823040, 832685, 878080, 882196, 928256, 951640, 1008224, 1015280, 1102745, 1152256, 1160320, 1165759, 1260280, 1332296, 1440320, 1522624, 1624448, 1646080, 1665370, 1764392, 1903280, 2016448, 2030560, 2205490, 2304512, 2320640, 2331518, 2520560, 2664592, 2880640, 3045248, 3248896, 3330740, 3528784, 3806560, 4032896, 4061120, 4410980, 4641280, 4663036, 5041120, 5329184, 5761280, 5828795, 6090496, 6497792, 6661480, 7057568, 7613120, 8065792, 8122240, 8160313, 8821960, 9326072, 10082240, 10658368, 11522560, 11657590, 12180992, 13322960, 14115136, 15226240, 16131584, 16244480, 16320626, 17643920, 18652144, 20164480, 21316736, 23315180, 26645920, 28230272, 30452480, 32488960, 32641252, 35287840, 37304288, 40328960, 40801565, 42633472, 46630360, 53291840, 56460544, 60904960, 65282504, 70575680, 74608576, 80657920, 81603130, 85266944, 93260720, 106583680, 112921088, 130565008, 141151360, 149217152, 163206260, 186521440, 213167360, 261130016, 282302720, 298434304, 326412520, 373042880, 426334720, 522260032, 564605440, 596868608, 652825040, 746085760, 1044520064, 1305650080, 1492171520, 2089040128, 2611300160, 2984343040, 4178080256, 5222600320, 10445200640, 20890401280]

約数ペア:

[(1, 20890401280), (2, 10445200640), (4, 5222600320), (5, 4178080256), (7, 2984343040), (8, 2611300160), (10, 2089040128), (14, 1492171520), (16, 1305650080), (20, 1044520064), (28, 746085760), (32, 652825040), (35, 596868608), (37, 564605440), (40, 522260032), (49, 426334720), (56, 373042880), (64, 326412520), (70, 298434304), (74, 282302720), (80, 261130016), (98, 213167360), (112, 186521440), (128, 163206260), (140, 149217152), (148, 141151360), (160, 130565008), (185, 112921088), (196, 106583680), (224, 93260720), (245, 85266944), (256, 81603130), (259, 80657920), (280, 74608576), (296, 70575680), (320, 65282504), (343, 60904960), (370, 56460544), (392, 53291840), (448, 46630360), (490, 42633472), (512, 40801565), (518, 40328960), (560, 37304288), (592, 35287840), (640, 32641252), (643, 32488960), (686, 30452480), (740, 28230272), (784, 26645920), (896, 23315180), (980, 21316736), (1036, 20164480), (1120, 18652144), (1184, 17643920), (1280, 16320626), (1286, 16244480), (1295, 16131584), (1372, 15226240), (1480, 14115136), (1568, 13322960), (1715, 12180992), (1792, 11657590), (1813, 11522560), (1960, 10658368), (2072, 10082240), (2240, 9326072), (2368, 8821960), (2560, 8160313), (2572, 8122240), (2590, 8065792), (2744, 7613120), (2960, 7057568), (3136, 6661480), (3215, 6497792), (3430, 6090496), (3584, 5828795), (3626, 5761280), (3920, 5329184), (4144, 5041120), (4480, 4663036), (4501, 4641280), (4736, 4410980), (5144, 4061120), (5180, 4032896), (5488, 3806560), (5920, 3528784), (6272, 3330740), (6430, 3248896), (6860, 3045248), (7252, 2880640), (7840, 2664592), (8288, 2520560), (8960, 2331518), (9002, 2320640), (9065, 2304512), (9472, 2205490), (10288, 2030560), (10360, 2016448), (10976, 1903280), (11840, 1764392), (12544, 1665370), (12691, 1646080), (12860, 1624448), (13720, 1522624), (14504, 1440320), (15680, 1332296), (16576, 1260280), (17920, 1165759), (18004, 1160320), (18130, 1152256), (18944, 1102745), (20576, 1015280), (20720, 1008224), (21952, 951640), (22505, 928256), (23680, 882196), (23791, 878080), (25088, 832685), (25382, 823040), (25720, 812224), (27440, 761312), (29008, 720160), (31360, 666148), (31507, 663040), (33152, 630140), (36008, 580160), (36260, 576128), (41152, 507640), (41440, 504112), (43904, 475820), (45010, 464128), (47360, 441098), (47582, 439040), (50764, 411520), (51440, 406112), (54880, 380656), (58016, 360080), (62720, 333074), (63014, 331520), (63455, 329216), (66304, 315070), (72016, 290080), (72520, 288064), (82304, 253820), (82880, 252056), (87808, 237910), (90020, 232064), (94720, 220549), (95164, 219520), (101528, 205760), (102880, 203056), (109760, 190328), (116032, 180040), (118955, 175616), (125440, 166537), (126028, 165760), (126910, 164608), (132608, 157535), (144032, 145040)]