19738817

素因数分解:

$7^2\times {\mathrm{103}}^1\times {\mathrm{3911}}^1$

素因数の和:4028

約数の個数: 12

約数和(自身を含む): 23190336

約数和(自身を除く): 3451519

約数列:

[1, 7, 49, 103, 721, 3911, 5047, 27377, 191639, 402833, 2819831, 19738817]

約数ペア:

[(1, 19738817), (7, 2819831), (49, 402833), (103, 191639), (721, 27377), (3911, 5047)]