20216105

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 30153984

約数和(自身を除く): 9937879

約数列:

[1, 5, 7, 13, 35, 65, 91, 157, 283, 455, 785, 1099, 1415, 1981, 2041, 3679, 5495, 9905, 10205, 14287, 18395, 25753, 44431, 71435, 128765, 222155, 311017, 577603, 1555085, 2888015, 4043221, 20216105]

約数ペア:

[(1, 20216105), (5, 4043221), (7, 2888015), (13, 1555085), (35, 577603), (65, 311017), (91, 222155), (157, 128765), (283, 71435), (455, 44431), (785, 25753), (1099, 18395), (1415, 14287), (1981, 10205), (2041, 9905), (3679, 5495)]