8220025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 11302848

約数和(自身を除く): 3082823

約数列:

[1, 5, 11, 25, 55, 71, 275, 355, 421, 781, 1775, 2105, 3905, 4631, 10525, 19525, 23155, 29891, 115775, 149455, 328801, 747275, 1644005, 8220025]

約数ペア:

[(1, 8220025), (5, 1644005), (11, 747275), (25, 328801), (55, 149455), (71, 115775), (275, 29891), (355, 23155), (421, 19525), (781, 10525), (1775, 4631), (2105, 3905)]