811890980

素因数分解:

$2^2\times 5^1\times {\mathrm{9007}}^1\times {\mathrm{4507}}^1$

素因数の和:13523

約数の個数: 24

約数和(自身を含む): 1705538688

約数和(自身を除く): 893647708

約数列:

[1, 2, 4, 5, 10, 20, 4507, 9007, 9014, 18014, 18028, 22535, 36028, 45035, 45070, 90070, 90140, 180140, 40594549, 81189098, 162378196, 202972745, 405945490, 811890980]

約数ペア:

[(1, 811890980), (2, 405945490), (4, 202972745), (5, 162378196), (10, 81189098), (20, 40594549), (4507, 180140), (9007, 90140), (9014, 90070), (18014, 45070), (18028, 45035), (22535, 36028)]