40292440

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1979}}^1$

素因数の和:2499

約数の個数: 32

約数和(自身を含む): 90882000

約数和(自身を除く): 50589560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 1979, 2036, 2545, 3958, 4072, 5090, 7916, 9895, 10180, 15832, 19790, 20360, 39580, 79160, 1007311, 2014622, 4029244, 5036555, 8058488, 10073110, 20146220, 40292440]

約数ペア:

[(1, 40292440), (2, 20146220), (4, 10073110), (5, 8058488), (8, 5036555), (10, 4029244), (20, 2014622), (40, 1007311), (509, 79160), (1018, 39580), (1979, 20360), (2036, 19790), (2545, 15832), (3958, 10180), (4072, 9895), (5090, 7916)]