25640955

素因数分解:

$3^4\times 5^1\times {\mathrm{63311}}^1$

素因数の和:63328

約数の個数: 20

約数和(自身を含む): 45964512

約数和(自身を除く): 20323557

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 63311, 189933, 316555, 569799, 949665, 1709397, 2848995, 5128191, 8546985, 25640955]

約数ペア:

[(1, 25640955), (3, 8546985), (5, 5128191), (9, 2848995), (15, 1709397), (27, 949665), (45, 569799), (81, 316555), (135, 189933), (405, 63311)]