19899439

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{17657}}^1$

素因数の和:17694

約数の個数: 12

約数和(自身を含む): 24156144

約数和(自身を除く): 4256705

約数列:

[1, 7, 23, 49, 161, 1127, 17657, 123599, 406111, 865193, 2842777, 19899439]

約数ペア:

[(1, 19899439), (7, 2842777), (23, 865193), (49, 406111), (161, 123599), (1127, 17657)]