68374960

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1321}}^1$

素因数の和:1981

約数の個数: 40

約数和(自身を含む): 159338016

約数和(自身を除く): 90963056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 1321, 2588, 2642, 3235, 5176, 5284, 6470, 6605, 10352, 10568, 12940, 13210, 21136, 25880, 26420, 51760, 52840, 105680, 854687, 1709374, 3418748, 4273435, 6837496, 8546870, 13674992, 17093740, 34187480, 68374960]

約数ペア:

[(1, 68374960), (2, 34187480), (4, 17093740), (5, 13674992), (8, 8546870), (10, 6837496), (16, 4273435), (20, 3418748), (40, 1709374), (80, 854687), (647, 105680), (1294, 52840), (1321, 51760), (2588, 26420), (2642, 25880), (3235, 21136), (5176, 13210), (5284, 12940), (6470, 10568), (6605, 10352)]