21942605

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 26866944

約数和(自身を除く): 4924339

約数列:

[1, 5, 103, 137, 311, 515, 685, 1555, 14111, 32033, 42607, 70555, 160165, 213035, 4388521, 21942605]

約数ペア:

[(1, 21942605), (5, 4388521), (103, 213035), (137, 160165), (311, 70555), (515, 42607), (685, 32033), (1555, 14111)]