19805804

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{821}}^1$

素因数の和:1025

約数の個数: 24

約数和(自身を含む): 35858928

約数和(自身を除く): 16053124

約数列:

[1, 2, 4, 37, 74, 148, 163, 326, 652, 821, 1642, 3284, 6031, 12062, 24124, 30377, 60754, 121508, 133823, 267646, 535292, 4951451, 9902902, 19805804]

約数ペア:

[(1, 19805804), (2, 9902902), (4, 4951451), (37, 535292), (74, 267646), (148, 133823), (163, 121508), (326, 60754), (652, 30377), (821, 24124), (1642, 12062), (3284, 6031)]