20922720

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1$

素因数の和:517

約数の個数: 192

約数和(自身を含む): 81285120

約数和(自身を除く): 60362400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 32, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 96, 104, 105, 112, 120, 130, 140, 156, 160, 168, 182, 195, 208, 210, 224, 240, 260, 273, 280, 312, 336, 364, 390, 416, 420, 455, 479, 480, 520, 546, 560, 624, 672, 728, 780, 840, 910, 958, 1040, 1092, 1120, 1248, 1365, 1437, 1456, 1560, 1680, 1820, 1916, 2080, 2184, 2395, 2730, 2874, 2912, 3120, 3353, 3360, 3640, 3832, 4368, 4790, 5460, 5748, 6227, 6240, 6706, 7185, 7280, 7664, 8736, 9580, 10059, 10920, 11496, 12454, 13412, 14370, 14560, 15328, 16765, 18681, 19160, 20118, 21840, 22992, 24908, 26824, 28740, 31135, 33530, 37362, 38320, 40236, 43589, 43680, 45984, 49816, 50295, 53648, 57480, 62270, 67060, 74724, 76640, 80472, 87178, 93405, 99632, 100590, 107296, 114960, 124540, 130767, 134120, 149448, 160944, 174356, 186810, 199264, 201180, 217945, 229920, 249080, 261534, 268240, 298896, 321888, 348712, 373620, 402360, 435890, 498160, 523068, 536480, 597792, 653835, 697424, 747240, 804720, 871780, 996320, 1046136, 1307670, 1394848, 1494480, 1609440, 1743560, 2092272, 2615340, 2988960, 3487120, 4184544, 5230680, 6974240, 10461360, 20922720]

約数ペア:

[(1, 20922720), (2, 10461360), (3, 6974240), (4, 5230680), (5, 4184544), (6, 3487120), (7, 2988960), (8, 2615340), (10, 2092272), (12, 1743560), (13, 1609440), (14, 1494480), (15, 1394848), (16, 1307670), (20, 1046136), (21, 996320), (24, 871780), (26, 804720), (28, 747240), (30, 697424), (32, 653835), (35, 597792), (39, 536480), (40, 523068), (42, 498160), (48, 435890), (52, 402360), (56, 373620), (60, 348712), (65, 321888), (70, 298896), (78, 268240), (80, 261534), (84, 249080), (91, 229920), (96, 217945), (104, 201180), (105, 199264), (112, 186810), (120, 174356), (130, 160944), (140, 149448), (156, 134120), (160, 130767), (168, 124540), (182, 114960), (195, 107296), (208, 100590), (210, 99632), (224, 93405), (240, 87178), (260, 80472), (273, 76640), (280, 74724), (312, 67060), (336, 62270), (364, 57480), (390, 53648), (416, 50295), (420, 49816), (455, 45984), (479, 43680), (480, 43589), (520, 40236), (546, 38320), (560, 37362), (624, 33530), (672, 31135), (728, 28740), (780, 26824), (840, 24908), (910, 22992), (958, 21840), (1040, 20118), (1092, 19160), (1120, 18681), (1248, 16765), (1365, 15328), (1437, 14560), (1456, 14370), (1560, 13412), (1680, 12454), (1820, 11496), (1916, 10920), (2080, 10059), (2184, 9580), (2395, 8736), (2730, 7664), (2874, 7280), (2912, 7185), (3120, 6706), (3353, 6240), (3360, 6227), (3640, 5748), (3832, 5460), (4368, 4790)]