20852080

素因数分解:

$2^4\times 5^1\times {\mathrm{260651}}^1$

素因数の和:260664

約数の個数: 20

約数和(自身を含む): 48481272

約数和(自身を除く): 27629192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260651, 521302, 1042604, 1303255, 2085208, 2606510, 4170416, 5213020, 10426040, 20852080]

約数ペア:

[(1, 20852080), (2, 10426040), (4, 5213020), (5, 4170416), (8, 2606510), (10, 2085208), (16, 1303255), (20, 1042604), (40, 521302), (80, 260651)]