20997999

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1877}}^1$

素因数の和:2007

約数の個数: 24

約数和(自身を含む): 33398352

約数和(自身を除く): 12400353

約数列:

[1, 3, 9, 11, 33, 99, 113, 339, 1017, 1243, 1877, 3729, 5631, 11187, 16893, 20647, 61941, 185823, 212101, 636303, 1908909, 2333111, 6999333, 20997999]

約数ペア:

[(1, 20997999), (3, 6999333), (9, 2333111), (11, 1908909), (33, 636303), (99, 212101), (113, 185823), (339, 61941), (1017, 20647), (1243, 16893), (1877, 11187), (3729, 5631)]