81087260

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{18181}}^1$

素因数の和:18413

約数の個数: 24

約数和(自身を含む): 171056256

約数和(自身を除く): 89968996

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 18181, 36362, 72724, 90905, 181810, 363620, 4054363, 8108726, 16217452, 20271815, 40543630, 81087260]

約数ペア:

[(1, 81087260), (2, 40543630), (4, 20271815), (5, 16217452), (10, 8108726), (20, 4054363), (223, 363620), (446, 181810), (892, 90905), (1115, 72724), (2230, 36362), (4460, 18181)]