280971925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{677}}^1\times {\mathrm{1277}}^1$

素因数の和:1977

約数の個数: 24

約数和(自身を含む): 376054056

約数和(自身を除く): 95082131

約数列:

[1, 5, 13, 25, 65, 325, 677, 1277, 3385, 6385, 8801, 16601, 16925, 31925, 44005, 83005, 220025, 415025, 864529, 4322645, 11238877, 21613225, 56194385, 280971925]

約数ペア:

[(1, 280971925), (5, 56194385), (13, 21613225), (25, 11238877), (65, 4322645), (325, 864529), (677, 415025), (1277, 220025), (3385, 83005), (6385, 44005), (8801, 31925), (16601, 16925)]