21202960

素因数分解:

$2^4\times 5^1\times {\mathrm{265037}}^1$

素因数の和:265050

約数の個数: 20

約数和(自身を含む): 49297068

約数和(自身を除く): 28094108

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 265037, 530074, 1060148, 1325185, 2120296, 2650370, 4240592, 5300740, 10601480, 21202960]

約数ペア:

[(1, 21202960), (2, 10601480), (4, 5300740), (5, 4240592), (8, 2650370), (10, 2120296), (16, 1325185), (20, 1060148), (40, 530074), (80, 265037)]