9719980

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2467}}^1$

素因数の和:2673

約数の個数: 24

約数和(自身を含む): 20523888

約数和(自身を除く): 10803908

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 2467, 3940, 4934, 9868, 12335, 24670, 49340, 485999, 971998, 1943996, 2429995, 4859990, 9719980]

約数ペア:

[(1, 9719980), (2, 4859990), (4, 2429995), (5, 1943996), (10, 971998), (20, 485999), (197, 49340), (394, 24670), (788, 12335), (985, 9868), (1970, 4934), (2467, 3940)]