521827180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{23741}}^1$

素因数の和:23914

約数の個数: 48

約数和(自身を含む): 1260415296

約数和(自身を除く): 738588116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 10990, 21980, 23741, 47482, 94964, 118705, 166187, 237410, 332374, 474820, 664748, 830935, 1661870, 3323740, 3727337, 7454674, 14909348, 18636685, 26091359, 37273370, 52182718, 74546740, 104365436, 130456795, 260913590, 521827180]

約数ペア:

[(1, 521827180), (2, 260913590), (4, 130456795), (5, 104365436), (7, 74546740), (10, 52182718), (14, 37273370), (20, 26091359), (28, 18636685), (35, 14909348), (70, 7454674), (140, 3727337), (157, 3323740), (314, 1661870), (628, 830935), (785, 664748), (1099, 474820), (1570, 332374), (2198, 237410), (3140, 166187), (4396, 118705), (5495, 94964), (10990, 47482), (21980, 23741)]