20495444

素因数分解:

$2^2\times {\mathrm{79}}^2\times {\mathrm{821}}^1$

素因数の和:983

約数の個数: 18

約数和(自身を含む): 36371034

約数和(自身を除く): 15875590

約数列:

[1, 2, 4, 79, 158, 316, 821, 1642, 3284, 6241, 12482, 24964, 64859, 129718, 259436, 5123861, 10247722, 20495444]

約数ペア:

[(1, 20495444), (2, 10247722), (4, 5123861), (79, 259436), (158, 129718), (316, 64859), (821, 24964), (1642, 12482), (3284, 6241)]