21240297

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{479}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 11956503

約数列:

[1, 3, 9, 13, 39, 117, 379, 479, 1137, 1437, 3411, 4311, 4927, 6227, 14781, 18681, 44343, 56043, 181541, 544623, 1633869, 2360033, 7080099, 21240297]

約数ペア:

[(1, 21240297), (3, 7080099), (9, 2360033), (13, 1633869), (39, 544623), (117, 181541), (379, 56043), (479, 44343), (1137, 18681), (1437, 14781), (3411, 6227), (4311, 4927)]