21491140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97687}}^1$

素因数の和:97707

約数の個数: 24

約数和(自身を含む): 49234752

約数和(自身を除く): 27743612

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 97687, 195374, 390748, 488435, 976870, 1074557, 1953740, 2149114, 4298228, 5372785, 10745570, 21491140]

約数ペア:

[(1, 21491140), (2, 10745570), (4, 5372785), (5, 4298228), (10, 2149114), (11, 1953740), (20, 1074557), (22, 976870), (44, 488435), (55, 390748), (110, 195374), (220, 97687)]