20759980

素因数分解:

$2^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1069}}^1$

素因数の和:2049

約数の個数: 24

約数和(自身を含む): 43681680

約数和(自身を除く): 22921700

約数列:

[1, 2, 4, 5, 10, 20, 971, 1069, 1942, 2138, 3884, 4276, 4855, 5345, 9710, 10690, 19420, 21380, 1037999, 2075998, 4151996, 5189995, 10379990, 20759980]

約数ペア:

[(1, 20759980), (2, 10379990), (4, 5189995), (5, 4151996), (10, 2075998), (20, 1037999), (971, 21380), (1069, 19420), (1942, 10690), (2138, 9710), (3884, 5345), (4276, 4855)]