21912759

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{569}}^1$

素因数の和:975

約数の個数: 24

約数和(自身を含む): 34678800

約数和(自身を除く): 12766041

約数列:

[1, 3, 9, 11, 33, 99, 389, 569, 1167, 1707, 3501, 4279, 5121, 6259, 12837, 18777, 38511, 56331, 221341, 664023, 1992069, 2434751, 7304253, 21912759]

約数ペア:

[(1, 21912759), (3, 7304253), (9, 2434751), (11, 1992069), (33, 664023), (99, 221341), (389, 56331), (569, 38511), (1167, 18777), (1707, 12837), (3501, 6259), (4279, 5121)]