21806525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{293}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 29347080

約数和(自身を除く): 7540555

約数列:

[1, 5, 13, 25, 65, 229, 293, 325, 1145, 1465, 2977, 3809, 5725, 7325, 14885, 19045, 67097, 74425, 95225, 335485, 872261, 1677425, 4361305, 21806525]

約数ペア:

[(1, 21806525), (5, 4361305), (13, 1677425), (25, 872261), (65, 335485), (229, 95225), (293, 74425), (325, 67097), (1145, 19045), (1465, 14885), (2977, 7325), (3809, 5725)]