18490591

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{19861}}^1$

素因数の和:19894

約数の個数: 12

約数和(自身を含む): 22642680

約数和(自身を除く): 4152089

約数列:

[1, 7, 19, 49, 133, 931, 19861, 139027, 377359, 973189, 2641513, 18490591]

約数ペア:

[(1, 18490591), (7, 2641513), (19, 973189), (49, 377359), (133, 139027), (931, 19861)]