19499975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3083}}^1$

素因数の和:3127

約数の個数: 24

約数和(自身を含む): 27533952

約数和(自身を除く): 8033977

約数列:

[1, 5, 11, 23, 25, 55, 115, 253, 275, 575, 1265, 3083, 6325, 15415, 33913, 70909, 77075, 169565, 354545, 779999, 847825, 1772725, 3899995, 19499975]

約数ペア:

[(1, 19499975), (5, 3899995), (11, 1772725), (23, 847825), (25, 779999), (55, 354545), (115, 169565), (253, 77075), (275, 70909), (575, 33913), (1265, 15415), (3083, 6325)]