21031385

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{2069}}^1$

素因数の和:2200

約数の個数: 16

約数和(自身を含む): 26827200

約数和(自身を除く): 5795815

約数列:

[1, 5, 19, 95, 107, 535, 2033, 2069, 10165, 10345, 39311, 196555, 221383, 1106915, 4206277, 21031385]

約数ペア:

[(1, 21031385), (5, 4206277), (19, 1106915), (95, 221383), (107, 196555), (535, 39311), (2033, 10345), (2069, 10165)]