78490640

素因数分解:

$2^4\times 5^1\times {\mathrm{981133}}^1$

素因数の和:981146

約数の個数: 20

約数和(自身を含む): 182490924

約数和(自身を除く): 104000284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981133, 1962266, 3924532, 4905665, 7849064, 9811330, 15698128, 19622660, 39245320, 78490640]

約数ペア:

[(1, 78490640), (2, 39245320), (4, 19622660), (5, 15698128), (8, 9811330), (10, 7849064), (16, 4905665), (20, 3924532), (40, 1962266), (80, 981133)]