25807280

素因数分解:

$2^4\times 5^1\times {\mathrm{322591}}^1$

素因数の和:322604

約数の個数: 20

約数和(自身を含む): 60002112

約数和(自身を除く): 34194832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 322591, 645182, 1290364, 1612955, 2580728, 3225910, 5161456, 6451820, 12903640, 25807280]

約数ペア:

[(1, 25807280), (2, 12903640), (4, 6451820), (5, 5161456), (8, 3225910), (10, 2580728), (16, 1612955), (20, 1290364), (40, 645182), (80, 322591)]