20801200

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:84

約数の個数: 240

約数和(自身を含む): 66424320

約数和(自身を除く): 45623120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 19, 20, 23, 25, 28, 34, 35, 38, 40, 46, 50, 56, 68, 70, 76, 80, 85, 92, 95, 100, 112, 115, 119, 133, 136, 140, 152, 161, 170, 175, 184, 190, 200, 230, 238, 266, 272, 280, 304, 322, 323, 340, 350, 368, 380, 391, 400, 425, 437, 460, 475, 476, 532, 560, 575, 595, 644, 646, 665, 680, 700, 760, 782, 805, 850, 874, 920, 950, 952, 1064, 1150, 1190, 1288, 1292, 1330, 1360, 1400, 1520, 1564, 1610, 1615, 1700, 1748, 1840, 1900, 1904, 1955, 2128, 2185, 2261, 2300, 2380, 2576, 2584, 2660, 2737, 2800, 2975, 3059, 3128, 3220, 3230, 3325, 3400, 3496, 3800, 3910, 4025, 4370, 4522, 4600, 4760, 5168, 5320, 5474, 5950, 6118, 6256, 6440, 6460, 6650, 6800, 6992, 7429, 7600, 7820, 8050, 8075, 8740, 9044, 9200, 9520, 9775, 10640, 10925, 10948, 11305, 11900, 12236, 12880, 12920, 13300, 13685, 14858, 15295, 15640, 16100, 16150, 17480, 18088, 19550, 21850, 21896, 22610, 23800, 24472, 25840, 26600, 27370, 29716, 30590, 31280, 32200, 32300, 34960, 36176, 37145, 39100, 43700, 43792, 45220, 47600, 48944, 52003, 53200, 54740, 56525, 59432, 61180, 64400, 64600, 68425, 74290, 76475, 78200, 87400, 90440, 104006, 109480, 113050, 118864, 122360, 129200, 136850, 148580, 152950, 156400, 174800, 180880, 185725, 208012, 218960, 226100, 244720, 260015, 273700, 297160, 305900, 371450, 416024, 452200, 520030, 547400, 594320, 611800, 742900, 832048, 904400, 1040060, 1094800, 1223600, 1300075, 1485800, 2080120, 2600150, 2971600, 4160240, 5200300, 10400600, 20801200]

約数ペア:

[(1, 20801200), (2, 10400600), (4, 5200300), (5, 4160240), (7, 2971600), (8, 2600150), (10, 2080120), (14, 1485800), (16, 1300075), (17, 1223600), (19, 1094800), (20, 1040060), (23, 904400), (25, 832048), (28, 742900), (34, 611800), (35, 594320), (38, 547400), (40, 520030), (46, 452200), (50, 416024), (56, 371450), (68, 305900), (70, 297160), (76, 273700), (80, 260015), (85, 244720), (92, 226100), (95, 218960), (100, 208012), (112, 185725), (115, 180880), (119, 174800), (133, 156400), (136, 152950), (140, 148580), (152, 136850), (161, 129200), (170, 122360), (175, 118864), (184, 113050), (190, 109480), (200, 104006), (230, 90440), (238, 87400), (266, 78200), (272, 76475), (280, 74290), (304, 68425), (322, 64600), (323, 64400), (340, 61180), (350, 59432), (368, 56525), (380, 54740), (391, 53200), (400, 52003), (425, 48944), (437, 47600), (460, 45220), (475, 43792), (476, 43700), (532, 39100), (560, 37145), (575, 36176), (595, 34960), (644, 32300), (646, 32200), (665, 31280), (680, 30590), (700, 29716), (760, 27370), (782, 26600), (805, 25840), (850, 24472), (874, 23800), (920, 22610), (950, 21896), (952, 21850), (1064, 19550), (1150, 18088), (1190, 17480), (1288, 16150), (1292, 16100), (1330, 15640), (1360, 15295), (1400, 14858), (1520, 13685), (1564, 13300), (1610, 12920), (1615, 12880), (1700, 12236), (1748, 11900), (1840, 11305), (1900, 10948), (1904, 10925), (1955, 10640), (2128, 9775), (2185, 9520), (2261, 9200), (2300, 9044), (2380, 8740), (2576, 8075), (2584, 8050), (2660, 7820), (2737, 7600), (2800, 7429), (2975, 6992), (3059, 6800), (3128, 6650), (3220, 6460), (3230, 6440), (3325, 6256), (3400, 6118), (3496, 5950), (3800, 5474), (3910, 5320), (4025, 5168), (4370, 4760), (4522, 4600)]