13991690

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 25920000

約数和(自身を除く): 11928310

約数列:

[1, 2, 5, 10, 79, 89, 158, 178, 199, 395, 398, 445, 790, 890, 995, 1990, 7031, 14062, 15721, 17711, 31442, 35155, 35422, 70310, 78605, 88555, 157210, 177110, 1399169, 2798338, 6995845, 13991690]

約数ペア:

[(1, 13991690), (2, 6995845), (5, 2798338), (10, 1399169), (79, 177110), (89, 157210), (158, 88555), (178, 78605), (199, 70310), (395, 35422), (398, 35155), (445, 31442), (790, 17711), (890, 15721), (995, 14062), (1990, 7031)]