20905925

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 27013896

約数和(自身を除く): 6107971

約数列:

[1, 5, 25, 37, 97, 185, 233, 485, 925, 1165, 2425, 3589, 5825, 8621, 17945, 22601, 43105, 89725, 113005, 215525, 565025, 836237, 4181185, 20905925]

約数ペア:

[(1, 20905925), (5, 4181185), (25, 836237), (37, 565025), (97, 215525), (185, 113005), (233, 89725), (485, 43105), (925, 22601), (1165, 17945), (2425, 8621), (3589, 5825)]