3999140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4877}}^1$

素因数の和:4927

約数の個数: 24

約数和(自身を含む): 8604792

約数和(自身を除く): 4605652

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 4877, 9754, 19508, 24385, 48770, 97540, 199957, 399914, 799828, 999785, 1999570, 3999140]

約数ペア:

[(1, 3999140), (2, 1999570), (4, 999785), (5, 799828), (10, 399914), (20, 199957), (41, 97540), (82, 48770), (164, 24385), (205, 19508), (410, 9754), (820, 4877)]