25880420

素因数分解:

$2^2\times 5^1\times {\mathrm{1294021}}^1$

素因数の和:1294030

約数の個数: 12

約数和(自身を含む): 54348924

約数和(自身を除く): 28468504

約数列:

[1, 2, 4, 5, 10, 20, 1294021, 2588042, 5176084, 6470105, 12940210, 25880420]

約数ペア:

[(1, 25880420), (2, 12940210), (4, 6470105), (5, 5176084), (10, 2588042), (20, 1294021)]