21899547

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1481}}^1$

素因数の和:1571

約数の個数: 24

約数和(自身を含む): 33291648

約数和(自身を除く): 11392101

約数列:

[1, 3, 9, 31, 53, 93, 159, 279, 477, 1481, 1643, 4443, 4929, 13329, 14787, 45911, 78493, 137733, 235479, 413199, 706437, 2433283, 7299849, 21899547]

約数ペア:

[(1, 21899547), (3, 7299849), (9, 2433283), (31, 706437), (53, 413199), (93, 235479), (159, 137733), (279, 78493), (477, 45911), (1481, 14787), (1643, 13329), (4443, 4929)]