20004910

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{499}}^1$

素因数の和:736

約数の個数: 32

約数和(自身を含む): 38160000

約数和(自身を除く): 18155090

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 211, 422, 499, 998, 1055, 2110, 2495, 4009, 4990, 8018, 9481, 18962, 20045, 40090, 47405, 94810, 105289, 210578, 526445, 1052890, 2000491, 4000982, 10002455, 20004910]

約数ペア:

[(1, 20004910), (2, 10002455), (5, 4000982), (10, 2000491), (19, 1052890), (38, 526445), (95, 210578), (190, 105289), (211, 94810), (422, 47405), (499, 40090), (998, 20045), (1055, 18962), (2110, 9481), (2495, 8018), (4009, 4990)]