18788958140

素因数分解:

$2^2\times 5^1\times {\mathrm{939447907}}^1$

素因数の和:939447916

約数の個数: 12

約数和(自身を含む): 39456812136

約数和(自身を除く): 20667853996

約数列:

[1, 2, 4, 5, 10, 20, 939447907, 1878895814, 3757791628, 4697239535, 9394479070, 18788958140]

約数ペア:

[(1, 18788958140), (2, 9394479070), (4, 4697239535), (5, 3757791628), (10, 1878895814), (20, 939447907)]