19815958

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{2633}}^1$

素因数の和:2759

約数の個数: 16

約数和(自身を含む): 30722976

約数和(自身を除く): 10907018

約数列:

[1, 2, 53, 71, 106, 142, 2633, 3763, 5266, 7526, 139549, 186943, 279098, 373886, 9907979, 19815958]

約数ペア:

[(1, 19815958), (2, 9907979), (53, 373886), (71, 279098), (106, 186943), (142, 139549), (2633, 7526), (3763, 5266)]