19919471999

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{479629}}^1$

素因数の和:480002

約数の個数: 16

約数和(自身を含む): 24173352000

約数和(自身を除く): 4253880001

約数列:

[1, 7, 17, 119, 349, 2443, 5933, 41531, 479629, 3357403, 8153693, 57075851, 167390521, 1171733647, 2845638857, 19919471999]

約数ペア:

[(1, 19919471999), (7, 2845638857), (17, 1171733647), (119, 167390521), (349, 57075851), (2443, 8153693), (5933, 3357403), (41531, 479629)]