20925477

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 31231200

約数和(自身を除く): 10305723

約数列:

[1, 3, 9, 43, 129, 139, 387, 389, 417, 1167, 1251, 3501, 5977, 16727, 17931, 50181, 53793, 54071, 150543, 162213, 486639, 2325053, 6975159, 20925477]

約数ペア:

[(1, 20925477), (3, 6975159), (9, 2325053), (43, 486639), (129, 162213), (139, 150543), (387, 54071), (389, 53793), (417, 50181), (1167, 17931), (1251, 16727), (3501, 5977)]