20746765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 7920755

約数列:

[1, 5, 13, 19, 65, 95, 107, 157, 247, 535, 785, 1235, 1391, 2033, 2041, 2983, 6955, 10165, 10205, 14915, 16799, 26429, 38779, 83995, 132145, 193895, 218387, 319181, 1091935, 1595905, 4149353, 20746765]

約数ペア:

[(1, 20746765), (5, 4149353), (13, 1595905), (19, 1091935), (65, 319181), (95, 218387), (107, 193895), (157, 132145), (247, 83995), (535, 38779), (785, 26429), (1235, 16799), (1391, 14915), (2033, 10205), (2041, 10165), (2983, 6955)]