21907197

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{1657}}^1$

素因数の和:1789

約数の個数: 24

約数和(自身を含む): 34400184

約数和(自身を除く): 12492987

約数列:

[1, 3, 9, 13, 39, 113, 117, 339, 1017, 1469, 1657, 4407, 4971, 13221, 14913, 21541, 64623, 187241, 193869, 561723, 1685169, 2434133, 7302399, 21907197]

約数ペア:

[(1, 21907197), (3, 7302399), (9, 2434133), (13, 1685169), (39, 561723), (113, 193869), (117, 187241), (339, 64623), (1017, 21541), (1469, 14913), (1657, 13221), (4407, 4971)]