81235287

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{8009}}^1$

素因数の和:8052

約数の個数: 36

約数和(自身を含む): 142449840

約数和(自身を除く): 61214553

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 441, 483, 1127, 1449, 3381, 8009, 10143, 24027, 56063, 72081, 168189, 184207, 392441, 504567, 552621, 1177323, 1289449, 1657863, 3531969, 3868347, 9026143, 11605041, 27078429, 81235287]

約数ペア:

[(1, 81235287), (3, 27078429), (7, 11605041), (9, 9026143), (21, 3868347), (23, 3531969), (49, 1657863), (63, 1289449), (69, 1177323), (147, 552621), (161, 504567), (207, 392441), (441, 184207), (483, 168189), (1127, 72081), (1449, 56063), (3381, 24027), (8009, 10143)]