9981320

素因数分解:

$2^3\times 5^1\times {\mathrm{249533}}^1$

素因数の和:249544

約数の個数: 16

約数和(自身を含む): 22458060

約数和(自身を除く): 12476740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 249533, 499066, 998132, 1247665, 1996264, 2495330, 4990660, 9981320]

約数ペア:

[(1, 9981320), (2, 4990660), (4, 2495330), (5, 1996264), (8, 1247665), (10, 998132), (20, 499066), (40, 249533)]