20212105

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1409}}^1$

素因数の和:1584

約数の個数: 16

約数和(自身を含む): 25718400

約数和(自身を除く): 5506295

約数列:

[1, 5, 19, 95, 151, 755, 1409, 2869, 7045, 14345, 26771, 133855, 212759, 1063795, 4042421, 20212105]

約数ペア:

[(1, 20212105), (5, 4042421), (19, 1063795), (95, 212759), (151, 133855), (755, 26771), (1409, 14345), (2869, 7045)]