2385220

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{499}}^1$

素因数の和:747

約数の個数: 24

約数和(自身を含む): 5040000

約数和(自身を除く): 2654780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 499, 956, 998, 1195, 1996, 2390, 2495, 4780, 4990, 9980, 119261, 238522, 477044, 596305, 1192610, 2385220]

約数ペア:

[(1, 2385220), (2, 1192610), (4, 596305), (5, 477044), (10, 238522), (20, 119261), (239, 9980), (478, 4990), (499, 4780), (956, 2495), (998, 2390), (1195, 1996)]