19979743

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1\times {\mathrm{443}}^1$

素因数の和:846

約数の個数: 16

約数和(自身を含む): 24295680

約数和(自身を除く): 4315937

約数列:

[1, 7, 17, 119, 379, 443, 2653, 3101, 6443, 7531, 45101, 52717, 167897, 1175279, 2854249, 19979743]

約数ペア:

[(1, 19979743), (7, 2854249), (17, 1175279), (119, 167897), (379, 52717), (443, 45101), (2653, 7531), (3101, 6443)]