20510975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1489}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 27714000

約数和(自身を除く): 7203025

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 1489, 2755, 7445, 13775, 28291, 37225, 43181, 141455, 215905, 707275, 820439, 1079525, 4102195, 20510975]

約数ペア:

[(1, 20510975), (5, 4102195), (19, 1079525), (25, 820439), (29, 707275), (95, 215905), (145, 141455), (475, 43181), (551, 37225), (725, 28291), (1489, 13775), (2755, 7445)]