21310945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{613}}^1$

素因数の和:1044

約数の個数: 16

約数和(自身を含む): 27187920

約数和(自身を除く): 5876975

約数列:

[1, 5, 17, 85, 409, 613, 2045, 3065, 6953, 10421, 34765, 52105, 250717, 1253585, 4262189, 21310945]

約数ペア:

[(1, 21310945), (5, 4262189), (17, 1253585), (85, 250717), (409, 52105), (613, 34765), (2045, 10421), (3065, 6953)]