21159801

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{811}}^1$

素因数の和:1053

約数の個数: 24

約数和(自身を含む): 33103616

約数和(自身を除く): 11943815

約数列:

[1, 3, 9, 13, 39, 117, 223, 669, 811, 2007, 2433, 2899, 7299, 8697, 10543, 26091, 31629, 94887, 180853, 542559, 1627677, 2351089, 7053267, 21159801]

約数ペア:

[(1, 21159801), (3, 7053267), (9, 2351089), (13, 1627677), (39, 542559), (117, 180853), (223, 94887), (669, 31629), (811, 26091), (2007, 10543), (2433, 8697), (2899, 7299)]