16221779

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:410

約数の個数: 16

約数和(自身を含む): 18969600

約数和(自身を除く): 2747821

約数列:

[1, 7, 103, 149, 151, 721, 1043, 1057, 15347, 15553, 22499, 107429, 108871, 157493, 2317397, 16221779]

約数ペア:

[(1, 16221779), (7, 2317397), (103, 157493), (149, 108871), (151, 107429), (721, 22499), (1043, 15553), (1057, 15347)]