68280880

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4289}}^1$

素因数の和:4501

約数の個数: 40

約数和(自身を含む): 159588000

約数和(自身を除く): 91307120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 4289, 7960, 8578, 15920, 17156, 21445, 34312, 42890, 68624, 85780, 171560, 343120, 853511, 1707022, 3414044, 4267555, 6828088, 8535110, 13656176, 17070220, 34140440, 68280880]

約数ペア:

[(1, 68280880), (2, 34140440), (4, 17070220), (5, 13656176), (8, 8535110), (10, 6828088), (16, 4267555), (20, 3414044), (40, 1707022), (80, 853511), (199, 343120), (398, 171560), (796, 85780), (995, 68624), (1592, 42890), (1990, 34312), (3184, 21445), (3980, 17156), (4289, 15920), (7960, 8578)]