90028025

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{1009}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 115721760

約数和(自身を除く): 25693735

約数列:

[1, 5, 25, 43, 83, 215, 415, 1009, 1075, 2075, 3569, 5045, 17845, 25225, 43387, 83747, 89225, 216935, 418735, 1084675, 2093675, 3601121, 18005605, 90028025]

約数ペア:

[(1, 90028025), (5, 18005605), (25, 3601121), (43, 2093675), (83, 1084675), (215, 418735), (415, 216935), (1009, 89225), (1075, 83747), (2075, 43387), (3569, 25225), (5045, 17845)]