8178680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4987}}^1$

素因数の和:5039

約数の個数: 32

約数和(自身を含む): 18854640

約数和(自身を除く): 10675960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 4987, 9974, 19948, 24935, 39896, 49870, 99740, 199480, 204467, 408934, 817868, 1022335, 1635736, 2044670, 4089340, 8178680]

約数ペア:

[(1, 8178680), (2, 4089340), (4, 2044670), (5, 1635736), (8, 1022335), (10, 817868), (20, 408934), (40, 204467), (41, 199480), (82, 99740), (164, 49870), (205, 39896), (328, 24935), (410, 19948), (820, 9974), (1640, 4987)]