21452090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17729}}^1$

素因数の和:17758

約数の個数: 24

約数和(自身を含む): 42445620

約数和(自身を除く): 20993530

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17729, 35458, 88645, 177290, 195019, 390038, 975095, 1950190, 2145209, 4290418, 10726045, 21452090]

約数ペア:

[(1, 21452090), (2, 10726045), (5, 4290418), (10, 2145209), (11, 1950190), (22, 975095), (55, 390038), (110, 195019), (121, 177290), (242, 88645), (605, 35458), (1210, 17729)]