19788908

素因数分解:

$2^2\times {\mathrm{157}}^1\times {\mathrm{31511}}^1$

素因数の和:31672

約数の個数: 12

約数和(自身を含む): 34852272

約数和(自身を除く): 15063364

約数列:

[1, 2, 4, 157, 314, 628, 31511, 63022, 126044, 4947227, 9894454, 19788908]

約数ペア:

[(1, 19788908), (2, 9894454), (4, 4947227), (157, 126044), (314, 63022), (628, 31511)]