678487960

素因数分解:

$2^3\times 5^1\times {\mathrm{1543}}^1\times {\mathrm{10993}}^1$

素因数の和:12547

約数の個数: 32

約数和(自身を含む): 1527726240

約数和(自身を除く): 849238280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1543, 3086, 6172, 7715, 10993, 12344, 15430, 21986, 30860, 43972, 54965, 61720, 87944, 109930, 219860, 439720, 16962199, 33924398, 67848796, 84810995, 135697592, 169621990, 339243980, 678487960]

約数ペア:

[(1, 678487960), (2, 339243980), (4, 169621990), (5, 135697592), (8, 84810995), (10, 67848796), (20, 33924398), (40, 16962199), (1543, 439720), (3086, 219860), (6172, 109930), (7715, 87944), (10993, 61720), (12344, 54965), (15430, 43972), (21986, 30860)]