1990220

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 4209408

約数和(自身を除く): 2219188

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 521, 764, 955, 1042, 1910, 2084, 2605, 3820, 5210, 10420, 99511, 199022, 398044, 497555, 995110, 1990220]

約数ペア:

[(1, 1990220), (2, 995110), (4, 497555), (5, 398044), (10, 199022), (20, 99511), (191, 10420), (382, 5210), (521, 3820), (764, 2605), (955, 2084), (1042, 1910)]