18331715

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 22692096

約数和(自身を除く): 4360381

約数列:

[1, 5, 41, 205, 223, 401, 1115, 2005, 9143, 16441, 45715, 82205, 89423, 447115, 3666343, 18331715]

約数ペア:

[(1, 18331715), (5, 3666343), (41, 447115), (205, 89423), (223, 82205), (401, 45715), (1115, 16441), (2005, 9143)]