1243458220

素因数分解:

$2^2\times 5^1\times {\mathrm{62172911}}^1$

素因数の和:62172920

約数の個数: 12

約数和(自身を含む): 2611262304

約数和(自身を除く): 1367804084

約数列:

[1, 2, 4, 5, 10, 20, 62172911, 124345822, 248691644, 310864555, 621729110, 1243458220]

約数ペア:

[(1, 1243458220), (2, 621729110), (4, 310864555), (5, 248691644), (10, 124345822), (20, 62172911)]