21530945

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{827}}^1$

素因数の和:1000

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 5177023

約数列:

[1, 5, 41, 127, 205, 635, 827, 4135, 5207, 26035, 33907, 105029, 169535, 525145, 4306189, 21530945]

約数ペア:

[(1, 21530945), (5, 4306189), (41, 525145), (127, 169535), (205, 105029), (635, 33907), (827, 26035), (4135, 5207)]