20652220

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5189}}^1$

素因数の和:5397

約数の個数: 24

約数和(自身を含む): 43596000

約数和(自身を除く): 22943780

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 5189, 10378, 20756, 25945, 51890, 103780, 1032611, 2065222, 4130444, 5163055, 10326110, 20652220]

約数ペア:

[(1, 20652220), (2, 10326110), (4, 5163055), (5, 4130444), (10, 2065222), (20, 1032611), (199, 103780), (398, 51890), (796, 25945), (995, 20756), (1990, 10378), (3980, 5189)]