20811820

素因数分解:

$2^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{3677}}^1$

素因数の和:3969

約数の個数: 24

約数和(自身を含む): 43871184

約数和(自身を除く): 23059364

約数列:

[1, 2, 4, 5, 10, 20, 283, 566, 1132, 1415, 2830, 3677, 5660, 7354, 14708, 18385, 36770, 73540, 1040591, 2081182, 4162364, 5202955, 10405910, 20811820]

約数ペア:

[(1, 20811820), (2, 10405910), (4, 5202955), (5, 4162364), (10, 2081182), (20, 1040591), (283, 73540), (566, 36770), (1132, 18385), (1415, 14708), (2830, 7354), (3677, 5660)]