20497311

素因数分解:

$3^2\times {\mathrm{47}}^2\times {\mathrm{1031}}^1$

素因数の和:1131

約数の個数: 18

約数和(自身を含む): 30279912

約数和(自身を除く): 9782601

約数列:

[1, 3, 9, 47, 141, 423, 1031, 2209, 3093, 6627, 9279, 19881, 48457, 145371, 436113, 2277479, 6832437, 20497311]

約数ペア:

[(1, 20497311), (3, 6832437), (9, 2277479), (47, 436113), (141, 145371), (423, 48457), (1031, 19881), (2209, 9279), (3093, 6627)]