20915240

素因数分解:

$2^3\times 5^1\times {\mathrm{522881}}^1$

素因数の和:522892

約数の個数: 16

約数和(自身を含む): 47059380

約数和(自身を除く): 26144140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 522881, 1045762, 2091524, 2614405, 4183048, 5228810, 10457620, 20915240]

約数ペア:

[(1, 20915240), (2, 10457620), (4, 5228810), (5, 4183048), (8, 2614405), (10, 2091524), (20, 1045762), (40, 522881)]