77981360

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22669}}^1$

素因数の和:22725

約数の個数: 40

約数和(自身を含む): 185531280

約数和(自身を除く): 107549920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 22669, 45338, 90676, 113345, 181352, 226690, 362704, 453380, 906760, 974767, 1813520, 1949534, 3899068, 4873835, 7798136, 9747670, 15596272, 19495340, 38990680, 77981360]

約数ペア:

[(1, 77981360), (2, 38990680), (4, 19495340), (5, 15596272), (8, 9747670), (10, 7798136), (16, 4873835), (20, 3899068), (40, 1949534), (43, 1813520), (80, 974767), (86, 906760), (172, 453380), (215, 362704), (344, 226690), (430, 181352), (688, 113345), (860, 90676), (1720, 45338), (3440, 22669)]