21657270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{721909}}^1$

素因数の和:721919

約数の個数: 16

約数和(自身を含む): 51977520

約数和(自身を除く): 30320250

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 721909, 1443818, 2165727, 3609545, 4331454, 7219090, 10828635, 21657270]

約数ペア:

[(1, 21657270), (2, 10828635), (3, 7219090), (5, 4331454), (6, 3609545), (10, 2165727), (15, 1443818), (30, 721909)]