21365816

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{17011}}^1$

素因数の和:17174

約数の個数: 16

約数和(自身を含む): 40318440

約数和(自身を除く): 18952624

約数列:

[1, 2, 4, 8, 157, 314, 628, 1256, 17011, 34022, 68044, 136088, 2670727, 5341454, 10682908, 21365816]

約数ペア:

[(1, 21365816), (2, 10682908), (4, 5341454), (8, 2670727), (157, 136088), (314, 68044), (628, 34022), (1256, 17011)]