81912663

素因数分解:

$3^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{2087}}^1$

素因数の和:2196

約数の個数: 36

約数和(自身を含む): 139248720

約数和(自身を除く): 57336057

約数列:

[1, 3, 7, 9, 21, 49, 63, 89, 147, 267, 441, 623, 801, 1869, 2087, 4361, 5607, 6261, 13083, 14609, 18783, 39249, 43827, 102263, 131481, 185743, 306789, 557229, 920367, 1300201, 1671687, 3900603, 9101407, 11701809, 27304221, 81912663]

約数ペア:

[(1, 81912663), (3, 27304221), (7, 11701809), (9, 9101407), (21, 3900603), (49, 1671687), (63, 1300201), (89, 920367), (147, 557229), (267, 306789), (441, 185743), (623, 131481), (801, 102263), (1869, 43827), (2087, 39249), (4361, 18783), (5607, 14609), (6261, 13083)]