9997880

素因数分解:

$2^3\times 5^1\times {\mathrm{249947}}^1$

素因数の和:249958

約数の個数: 16

約数和(自身を含む): 22495320

約数和(自身を除く): 12497440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 249947, 499894, 999788, 1249735, 1999576, 2499470, 4998940, 9997880]

約数ペア:

[(1, 9997880), (2, 4998940), (4, 2499470), (5, 1999576), (8, 1249735), (10, 999788), (20, 499894), (40, 249947)]