638510225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{34939}}^1$

素因数の和:35009

約数の個数: 24

約数和(自身を含む): 857846880

約数和(自身を除く): 219336655

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 3655, 18275, 34939, 174695, 593963, 873475, 1502377, 2969815, 7511885, 14849075, 25540409, 37559425, 127702045, 638510225]

約数ペア:

[(1, 638510225), (5, 127702045), (17, 37559425), (25, 25540409), (43, 14849075), (85, 7511885), (215, 2969815), (425, 1502377), (731, 873475), (1075, 593963), (3655, 174695), (18275, 34939)]