19690741

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 22999680

約数和(自身を除く): 3308939

約数列:

[1, 7, 109, 131, 197, 763, 917, 1379, 14279, 21473, 25807, 99953, 150311, 180649, 2812963, 19690741]

約数ペア:

[(1, 19690741), (7, 2812963), (109, 180649), (131, 150311), (197, 99953), (763, 25807), (917, 21473), (1379, 14279)]