19919891

素因数分解:

${\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:286

約数の個数: 16

約数和(自身を含む): 21228480

約数和(自身を除く): 1308589

約数列:

[1, 41, 53, 89, 103, 2173, 3649, 4223, 4717, 5459, 9167, 193397, 223819, 375847, 485851, 19919891]

約数ペア:

[(1, 19919891), (41, 485851), (53, 375847), (89, 223819), (103, 193397), (2173, 9167), (3649, 5459), (4223, 4717)]