20158915

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19861}}^1$

素因数の和:19902

約数の個数: 16

約数和(自身を含む): 28601280

約数和(自身を除く): 8442365

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 19861, 99305, 139027, 575969, 695135, 2879845, 4031783, 20158915]

約数ペア:

[(1, 20158915), (5, 4031783), (7, 2879845), (29, 695135), (35, 575969), (145, 139027), (203, 99305), (1015, 19861)]