19871787

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{8353}}^1$

素因数の和:8430

約数の個数: 16

約数和(自身を含む): 29005088

約数和(自身を除く): 9133301

約数列:

[1, 3, 13, 39, 61, 183, 793, 2379, 8353, 25059, 108589, 325767, 509533, 1528599, 6623929, 19871787]

約数ペア:

[(1, 19871787), (3, 6623929), (13, 1528599), (39, 509533), (61, 325767), (183, 108589), (793, 25059), (2379, 8353)]