217919810

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{166351}}^1$

素因数の和:166489

約数の個数: 16

約数和(自身を含む): 395252352

約数和(自身を除く): 177332542

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 166351, 332702, 831755, 1663510, 21791981, 43583962, 108959905, 217919810]

約数ペア:

[(1, 217919810), (2, 108959905), (5, 43583962), (10, 21791981), (131, 1663510), (262, 831755), (655, 332702), (1310, 166351)]