19903849

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{21379}}^1$

素因数の和:21412

約数の個数: 12

約数和(自身を含む): 24373200

約数和(自身を除く): 4469351

約数列:

[1, 7, 19, 49, 133, 931, 21379, 149653, 406201, 1047571, 2843407, 19903849]

約数ペア:

[(1, 19903849), (7, 2843407), (19, 1047571), (49, 406201), (133, 149653), (931, 21379)]