21581260

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{5591}}^1$

素因数の和:5793

約数の個数: 24

約数和(自身を含む): 45563616

約数和(自身を除く): 23982356

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 5591, 11182, 22364, 27955, 55910, 111820, 1079063, 2158126, 4316252, 5395315, 10790630, 21581260]

約数ペア:

[(1, 21581260), (2, 10790630), (4, 5395315), (5, 4316252), (10, 2158126), (20, 1079063), (193, 111820), (386, 55910), (772, 27955), (965, 22364), (1930, 11182), (3860, 5591)]