21455275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2657}}^1$

素因数の和:2703

約数の個数: 24

約数和(自身を含む): 29663280

約数和(自身を除く): 8208005

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 2657, 8075, 13285, 45169, 50483, 66425, 225845, 252415, 858211, 1129225, 1262075, 4291055, 21455275]

約数ペア:

[(1, 21455275), (5, 4291055), (17, 1262075), (19, 1129225), (25, 858211), (85, 252415), (95, 225845), (323, 66425), (425, 50483), (475, 45169), (1615, 13285), (2657, 8075)]