9998960

素因数分解:

$2^4\times 5^1\times {\mathrm{124987}}^1$

素因数の和:125000

約数の個数: 20

約数和(自身を含む): 23247768

約数和(自身を除く): 13248808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124987, 249974, 499948, 624935, 999896, 1249870, 1999792, 2499740, 4999480, 9998960]

約数ペア:

[(1, 9998960), (2, 4999480), (4, 2499740), (5, 1999792), (8, 1249870), (10, 999896), (16, 624935), (20, 499948), (40, 249974), (80, 124987)]