15320781

素因数分解:

$3^2\times 7^4\times {\mathrm{709}}^1$

素因数の和:743

約数の個数: 30

約数和(自身を含む): 25853230

約数和(自身を除く): 10532449

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 709, 1029, 2127, 2401, 3087, 4963, 6381, 7203, 14889, 21609, 34741, 44667, 104223, 243187, 312669, 729561, 1702309, 2188683, 5106927, 15320781]

約数ペア:

[(1, 15320781), (3, 5106927), (7, 2188683), (9, 1702309), (21, 729561), (49, 312669), (63, 243187), (147, 104223), (343, 44667), (441, 34741), (709, 21609), (1029, 14889), (2127, 7203), (2401, 6381), (3087, 4963)]