81010865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{439}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 111767040

約数和(自身を除く): 30756175

約数列:

[1, 5, 13, 17, 65, 85, 167, 221, 439, 835, 1105, 2171, 2195, 2839, 5707, 7463, 10855, 14195, 28535, 36907, 37315, 73313, 97019, 184535, 366565, 485095, 953069, 1246321, 4765345, 6231605, 16202173, 81010865]

約数ペア:

[(1, 81010865), (5, 16202173), (13, 6231605), (17, 4765345), (65, 1246321), (85, 953069), (167, 485095), (221, 366565), (439, 184535), (835, 97019), (1105, 73313), (2171, 37315), (2195, 36907), (2839, 28535), (5707, 14195), (7463, 10855)]