20657775

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{4111}}^1$

素因数の和:4191

約数の個数: 24

約数和(自身を含む): 34672384

約数和(自身を除く): 14014609

約数列:

[1, 3, 5, 15, 25, 67, 75, 201, 335, 1005, 1675, 4111, 5025, 12333, 20555, 61665, 102775, 275437, 308325, 826311, 1377185, 4131555, 6885925, 20657775]

約数ペア:

[(1, 20657775), (3, 6885925), (5, 4131555), (15, 1377185), (25, 826311), (67, 308325), (75, 275437), (201, 102775), (335, 61665), (1005, 20555), (1675, 12333), (4111, 5025)]