81661595

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{2099}}^1$

素因数の和:2386

約数の個数: 16

約数和(自身を含む): 101606400

約数和(自身を除く): 19944805

約数列:

[1, 5, 31, 155, 251, 1255, 2099, 7781, 10495, 38905, 65069, 325345, 526849, 2634245, 16332319, 81661595]

約数ペア:

[(1, 81661595), (5, 16332319), (31, 2634245), (155, 526849), (251, 325345), (1255, 65069), (2099, 38905), (7781, 10495)]