688889480

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{218003}}^1$

素因数の和:218093

約数の個数: 32

約数和(自身を含む): 1569628800

約数和(自身を除く): 880739320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 218003, 436006, 872012, 1090015, 1744024, 2180030, 4360060, 8720120, 17222237, 34444474, 68888948, 86111185, 137777896, 172222370, 344444740, 688889480]

約数ペア:

[(1, 688889480), (2, 344444740), (4, 172222370), (5, 137777896), (8, 86111185), (10, 68888948), (20, 34444474), (40, 17222237), (79, 8720120), (158, 4360060), (316, 2180030), (395, 1744024), (632, 1090015), (790, 872012), (1580, 436006), (3160, 218003)]