81813069

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{149}}^1$

素因数の和:219

約数の個数: 54

約数和(自身を含む): 135959850

約数和(自身を除く): 54146781

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 149, 169, 171, 247, 361, 447, 507, 741, 1083, 1341, 1521, 1937, 2223, 2831, 3211, 3249, 4693, 5811, 8493, 9633, 14079, 17433, 25181, 25479, 28899, 36803, 42237, 53789, 61009, 75543, 110409, 161367, 183027, 226629, 331227, 478439, 484101, 549081, 699257, 1435317, 2097771, 4305951, 6293313, 9090341, 27271023, 81813069]

約数ペア:

[(1, 81813069), (3, 27271023), (9, 9090341), (13, 6293313), (19, 4305951), (39, 2097771), (57, 1435317), (117, 699257), (149, 549081), (169, 484101), (171, 478439), (247, 331227), (361, 226629), (447, 183027), (507, 161367), (741, 110409), (1083, 75543), (1341, 61009), (1521, 53789), (1937, 42237), (2223, 36803), (2831, 28899), (3211, 25479), (3249, 25181), (4693, 17433), (5811, 14079), (8493, 9633)]