9981520

素因数分解:

$2^4\times 5^1\times {\mathrm{124769}}^1$

素因数の和:124782

約数の個数: 20

約数和(自身を含む): 23207220

約数和(自身を除く): 13225700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124769, 249538, 499076, 623845, 998152, 1247690, 1996304, 2495380, 4990760, 9981520]

約数ペア:

[(1, 9981520), (2, 4990760), (4, 2495380), (5, 1996304), (8, 1247690), (10, 998152), (16, 623845), (20, 499076), (40, 249538), (80, 124769)]