19917796

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{63031}}^1$

素因数の和:63114

約数の個数: 12

約数和(自身を含む): 35297920

約数和(自身を除く): 15380124

約数列:

[1, 2, 4, 79, 158, 316, 63031, 126062, 252124, 4979449, 9958898, 19917796]

約数ペア:

[(1, 19917796), (2, 9958898), (4, 4979449), (79, 252124), (158, 126062), (316, 63031)]