490017820

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{78781}}^1$

素因数の和:79101

約数の個数: 24

約数和(自身を含む): 1032359328

約数和(自身を除く): 542341508

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 78781, 157562, 315124, 393905, 787810, 1575620, 24500891, 49001782, 98003564, 122504455, 245008910, 490017820]

約数ペア:

[(1, 490017820), (2, 245008910), (4, 122504455), (5, 98003564), (10, 49001782), (20, 24500891), (311, 1575620), (622, 787810), (1244, 393905), (1555, 315124), (3110, 157562), (6220, 78781)]