28657360

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8737}}^1$

素因数の和:8791

約数の個数: 40

約数和(自身を含む): 68261256

約数和(自身を除く): 39603896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 8737, 17474, 34948, 43685, 69896, 87370, 139792, 174740, 349480, 358217, 698960, 716434, 1432868, 1791085, 2865736, 3582170, 5731472, 7164340, 14328680, 28657360]

約数ペア:

[(1, 28657360), (2, 14328680), (4, 7164340), (5, 5731472), (8, 3582170), (10, 2865736), (16, 1791085), (20, 1432868), (40, 716434), (41, 698960), (80, 358217), (82, 349480), (164, 174740), (205, 139792), (328, 87370), (410, 69896), (656, 43685), (820, 34948), (1640, 17474), (3280, 8737)]