80584880

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1979}}^1$

素因数の和:2501

約数の個数: 40

約数和(自身を含む): 187822800

約数和(自身を除く): 107237920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1979, 2036, 2545, 3958, 4072, 5090, 7916, 8144, 9895, 10180, 15832, 19790, 20360, 31664, 39580, 40720, 79160, 158320, 1007311, 2014622, 4029244, 5036555, 8058488, 10073110, 16116976, 20146220, 40292440, 80584880]

約数ペア:

[(1, 80584880), (2, 40292440), (4, 20146220), (5, 16116976), (8, 10073110), (10, 8058488), (16, 5036555), (20, 4029244), (40, 2014622), (80, 1007311), (509, 158320), (1018, 79160), (1979, 40720), (2036, 39580), (2545, 31664), (3958, 20360), (4072, 19790), (5090, 15832), (7916, 10180), (8144, 9895)]