661821745

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{883}}^1\times {\mathrm{887}}^1$

素因数の和:1801

約数の個数: 24

約数和(自身を含む): 861921216

約数和(自身を除く): 200099471

約数列:

[1, 5, 13, 65, 169, 845, 883, 887, 4415, 4435, 11479, 11531, 57395, 57655, 149227, 149903, 746135, 749515, 783221, 3916105, 10181873, 50909365, 132364349, 661821745]

約数ペア:

[(1, 661821745), (5, 132364349), (13, 50909365), (65, 10181873), (169, 3916105), (845, 783221), (883, 749515), (887, 746135), (4415, 149903), (4435, 149227), (11479, 57655), (11531, 57395)]