81641755

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{1307}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 109102896

約数和(自身を除く): 27461141

約数列:

[1, 5, 13, 31, 65, 155, 403, 961, 1307, 2015, 4805, 6535, 12493, 16991, 40517, 62465, 84955, 202585, 526721, 1256027, 2633605, 6280135, 16328351, 81641755]

約数ペア:

[(1, 81641755), (5, 16328351), (13, 6280135), (31, 2633605), (65, 1256027), (155, 526721), (403, 202585), (961, 84955), (1307, 62465), (2015, 40517), (4805, 16991), (6535, 12493)]