21056740

素因数分解:

$2^2\times 5^1\times {\mathrm{797}}^1\times {\mathrm{1321}}^1$

素因数の和:2127

約数の個数: 24

約数和(自身を含む): 44308152

約数和(自身を除く): 23251412

約数列:

[1, 2, 4, 5, 10, 20, 797, 1321, 1594, 2642, 3188, 3985, 5284, 6605, 7970, 13210, 15940, 26420, 1052837, 2105674, 4211348, 5264185, 10528370, 21056740]

約数ペア:

[(1, 21056740), (2, 10528370), (4, 5264185), (5, 4211348), (10, 2105674), (20, 1052837), (797, 26420), (1321, 15940), (1594, 13210), (2642, 7970), (3188, 6605), (3985, 5284)]