21355604

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{617}}^1$

素因数の和:1147

約数の個数: 24

約数和(自身を含む): 39712680

約数和(自身を除く): 18357076

約数列:

[1, 2, 4, 17, 34, 68, 509, 617, 1018, 1234, 2036, 2468, 8653, 10489, 17306, 20978, 34612, 41956, 314053, 628106, 1256212, 5338901, 10677802, 21355604]

約数ペア:

[(1, 21355604), (2, 10677802), (4, 5338901), (17, 1256212), (34, 628106), (68, 314053), (509, 41956), (617, 34612), (1018, 20978), (1234, 17306), (2036, 10489), (2468, 8653)]