261047560

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{1619}}^1$

素因数の和:1798

約数の個数: 64

約数和(自身を含む): 612360000

約数和(自身を除く): 351312440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 139, 145, 232, 278, 290, 556, 580, 695, 1112, 1160, 1390, 1619, 2780, 3238, 4031, 5560, 6476, 8062, 8095, 12952, 16124, 16190, 20155, 32248, 32380, 40310, 46951, 64760, 80620, 93902, 161240, 187804, 225041, 234755, 375608, 450082, 469510, 900164, 939020, 1125205, 1800328, 1878040, 2250410, 4500820, 6526189, 9001640, 13052378, 26104756, 32630945, 52209512, 65261890, 130523780, 261047560]

約数ペア:

[(1, 261047560), (2, 130523780), (4, 65261890), (5, 52209512), (8, 32630945), (10, 26104756), (20, 13052378), (29, 9001640), (40, 6526189), (58, 4500820), (116, 2250410), (139, 1878040), (145, 1800328), (232, 1125205), (278, 939020), (290, 900164), (556, 469510), (580, 450082), (695, 375608), (1112, 234755), (1160, 225041), (1390, 187804), (1619, 161240), (2780, 93902), (3238, 80620), (4031, 64760), (5560, 46951), (6476, 40310), (8062, 32380), (8095, 32248), (12952, 20155), (16124, 16190)]