217507895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1237}}^1$

素因数の和:1415

約数の個数: 32

約数和(自身を含む): 299496960

約数和(自身を除く): 81989065

約数列:

[1, 5, 11, 23, 55, 115, 139, 253, 695, 1237, 1265, 1529, 3197, 6185, 7645, 13607, 15985, 28451, 35167, 68035, 142255, 171943, 175835, 312961, 859715, 1564805, 1891373, 3954689, 9456865, 19773445, 43501579, 217507895]

約数ペア:

[(1, 217507895), (5, 43501579), (11, 19773445), (23, 9456865), (55, 3954689), (115, 1891373), (139, 1564805), (253, 859715), (695, 312961), (1237, 175835), (1265, 171943), (1529, 142255), (3197, 68035), (6185, 35167), (7645, 28451), (13607, 15985)]