68789900

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{6311}}^1$

素因数の和:6434

約数の個数: 36

約数和(自身を含む): 150667440

約数和(自身を除く): 81877540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 2180, 2725, 5450, 6311, 10900, 12622, 25244, 31555, 63110, 126220, 157775, 315550, 631100, 687899, 1375798, 2751596, 3439495, 6878990, 13757980, 17197475, 34394950, 68789900]

約数ペア:

[(1, 68789900), (2, 34394950), (4, 17197475), (5, 13757980), (10, 6878990), (20, 3439495), (25, 2751596), (50, 1375798), (100, 687899), (109, 631100), (218, 315550), (436, 157775), (545, 126220), (1090, 63110), (2180, 31555), (2725, 25244), (5450, 12622), (6311, 10900)]