21897279

素因数分解:

$3^2\times {\mathrm{571}}^1\times {\mathrm{4261}}^1$

素因数の和:4838

約数の個数: 12

約数和(自身を含む): 31692232

約数和(自身を除く): 9794953

約数列:

[1, 3, 9, 571, 1713, 4261, 5139, 12783, 38349, 2433031, 7299093, 21897279]

約数ペア:

[(1, 21897279), (3, 7299093), (9, 2433031), (571, 38349), (1713, 12783), (4261, 5139)]