21253490

素因数分解:

$2^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{9281}}^1$

素因数の和:9517

約数の個数: 16

約数和(自身を含む): 38427480

約数和(自身を除く): 17173990

約数列:

[1, 2, 5, 10, 229, 458, 1145, 2290, 9281, 18562, 46405, 92810, 2125349, 4250698, 10626745, 21253490]

約数ペア:

[(1, 21253490), (2, 10626745), (5, 4250698), (10, 2125349), (229, 92810), (458, 46405), (1145, 18562), (2290, 9281)]