68990860

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{3889}}^1$

素因数の和:4785

約数の個数: 24

約数和(自身を含む): 145081440

約数和(自身を除く): 76090580

約数列:

[1, 2, 4, 5, 10, 20, 887, 1774, 3548, 3889, 4435, 7778, 8870, 15556, 17740, 19445, 38890, 77780, 3449543, 6899086, 13798172, 17247715, 34495430, 68990860]

約数ペア:

[(1, 68990860), (2, 34495430), (4, 17247715), (5, 13798172), (10, 6899086), (20, 3449543), (887, 77780), (1774, 38890), (3548, 19445), (3889, 17740), (4435, 15556), (7778, 8870)]