25408021220

素因数分解:

$2^2\times 5^1\times {\mathrm{1270401061}}^1$

素因数の和:1270401070

約数の個数: 12

約数和(自身を含む): 53356844604

約数和(自身を除く): 27948823384

約数列:

[1, 2, 4, 5, 10, 20, 1270401061, 2540802122, 5081604244, 6352005305, 12704010610, 25408021220]

約数ペア:

[(1, 25408021220), (2, 12704010610), (4, 6352005305), (5, 5081604244), (10, 2540802122), (20, 1270401061)]