9981560

素因数分解:

$2^3\times 5^1\times {\mathrm{249539}}^1$

素因数の和:249550

約数の個数: 16

約数和(自身を含む): 22458600

約数和(自身を除く): 12477040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 249539, 499078, 998156, 1247695, 1996312, 2495390, 4990780, 9981560]

約数ペア:

[(1, 9981560), (2, 4990780), (4, 2495390), (5, 1996312), (8, 1247695), (10, 998156), (20, 499078), (40, 249539)]