20796870400

素因数分解:

$2^8\times 5^2\times {\mathrm{1223}}^1\times {\mathrm{2657}}^1$

素因数の和:3906

約数の個数: 108

約数和(自身を含む): 51536982672

約数和(自身を除く): 30740112272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1223, 1280, 1600, 2446, 2657, 3200, 4892, 5314, 6115, 6400, 9784, 10628, 12230, 13285, 19568, 21256, 24460, 26570, 30575, 39136, 42512, 48920, 53140, 61150, 66425, 78272, 85024, 97840, 106280, 122300, 132850, 156544, 170048, 195680, 212560, 244600, 265700, 313088, 340096, 391360, 425120, 489200, 531400, 680192, 782720, 850240, 978400, 1062800, 1565440, 1700480, 1956800, 2125600, 3249511, 3400960, 3913600, 4251200, 6499022, 7827200, 8502400, 12998044, 16247555, 17004800, 25996088, 32495110, 51992176, 64990220, 81237775, 103984352, 129980440, 162475550, 207968704, 259960880, 324951100, 415937408, 519921760, 649902200, 831874816, 1039843520, 1299804400, 2079687040, 2599608800, 4159374080, 5199217600, 10398435200, 20796870400]

約数ペア:

[(1, 20796870400), (2, 10398435200), (4, 5199217600), (5, 4159374080), (8, 2599608800), (10, 2079687040), (16, 1299804400), (20, 1039843520), (25, 831874816), (32, 649902200), (40, 519921760), (50, 415937408), (64, 324951100), (80, 259960880), (100, 207968704), (128, 162475550), (160, 129980440), (200, 103984352), (256, 81237775), (320, 64990220), (400, 51992176), (640, 32495110), (800, 25996088), (1223, 17004800), (1280, 16247555), (1600, 12998044), (2446, 8502400), (2657, 7827200), (3200, 6499022), (4892, 4251200), (5314, 3913600), (6115, 3400960), (6400, 3249511), (9784, 2125600), (10628, 1956800), (12230, 1700480), (13285, 1565440), (19568, 1062800), (21256, 978400), (24460, 850240), (26570, 782720), (30575, 680192), (39136, 531400), (42512, 489200), (48920, 425120), (53140, 391360), (61150, 340096), (66425, 313088), (78272, 265700), (85024, 244600), (97840, 212560), (106280, 195680), (122300, 170048), (132850, 156544)]