68080840

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2647}}^1$

素因数の和:3301

約数の個数: 32

約数和(自身を含む): 153478080

約数和(自身を除く): 85397240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 2647, 3215, 5144, 5294, 6430, 10588, 12860, 13235, 21176, 25720, 26470, 52940, 105880, 1702021, 3404042, 6808084, 8510105, 13616168, 17020210, 34040420, 68080840]

約数ペア:

[(1, 68080840), (2, 34040420), (4, 17020210), (5, 13616168), (8, 8510105), (10, 6808084), (20, 3404042), (40, 1702021), (643, 105880), (1286, 52940), (2572, 26470), (2647, 25720), (3215, 21176), (5144, 13235), (5294, 12860), (6430, 10588)]