20456830

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19861}}^1$

素因数の和:19971

約数の個数: 16

約数和(自身を含む): 37181664

約数和(自身を除く): 16724834

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19861, 39722, 99305, 198610, 2045683, 4091366, 10228415, 20456830]

約数ペア:

[(1, 20456830), (2, 10228415), (5, 4091366), (10, 2045683), (103, 198610), (206, 99305), (515, 39722), (1030, 19861)]