81355585

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{4283}}^1$

素因数の和:4448

約数の個数: 16

約数和(自身を含む): 101787840

約数和(自身を除く): 20432255

約数列:

[1, 5, 29, 131, 145, 655, 3799, 4283, 18995, 21415, 124207, 561073, 621035, 2805365, 16271117, 81355585]

約数ペア:

[(1, 81355585), (5, 16271117), (29, 2805365), (131, 621035), (145, 561073), (655, 124207), (3799, 21415), (4283, 18995)]