78541520

素因数分解:

$2^4\times 5^1\times {\mathrm{981769}}^1$

素因数の和:981782

約数の個数: 20

約数和(自身を含む): 182609220

約数和(自身を除く): 104067700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981769, 1963538, 3927076, 4908845, 7854152, 9817690, 15708304, 19635380, 39270760, 78541520]

約数ペア:

[(1, 78541520), (2, 39270760), (4, 19635380), (5, 15708304), (8, 9817690), (10, 7854152), (16, 4908845), (20, 3927076), (40, 1963538), (80, 981769)]