99985880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1487}}^1$

素因数の和:1580

約数の個数: 48

約数和(自身を含む): 230744160

約数和(自身を除く): 130758280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1487, 1640, 1681, 2974, 3362, 5948, 6724, 7435, 8405, 11896, 13448, 14870, 16810, 29740, 33620, 59480, 60967, 67240, 121934, 243868, 304835, 487736, 609670, 1219340, 2438680, 2499647, 4999294, 9998588, 12498235, 19997176, 24996470, 49992940, 99985880]

約数ペア:

[(1, 99985880), (2, 49992940), (4, 24996470), (5, 19997176), (8, 12498235), (10, 9998588), (20, 4999294), (40, 2499647), (41, 2438680), (82, 1219340), (164, 609670), (205, 487736), (328, 304835), (410, 243868), (820, 121934), (1487, 67240), (1640, 60967), (1681, 59480), (2974, 33620), (3362, 29740), (5948, 16810), (6724, 14870), (7435, 13448), (8405, 11896)]