81177291

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^2$

素因数の和:157

約数の個数: 54

約数和(自身を含む): 136221540

約数和(自身を除く): 55044249

約数列:

[1, 3, 9, 13, 19, 39, 53, 57, 117, 159, 169, 171, 247, 477, 507, 689, 741, 1007, 1521, 2067, 2223, 2809, 3021, 3211, 6201, 8427, 8957, 9063, 9633, 13091, 25281, 26871, 28899, 36517, 39273, 53371, 80613, 109551, 117819, 160113, 170183, 328653, 474721, 480339, 510549, 693823, 1424163, 1531647, 2081469, 4272489, 6244407, 9019699, 27059097, 81177291]

約数ペア:

[(1, 81177291), (3, 27059097), (9, 9019699), (13, 6244407), (19, 4272489), (39, 2081469), (53, 1531647), (57, 1424163), (117, 693823), (159, 510549), (169, 480339), (171, 474721), (247, 328653), (477, 170183), (507, 160113), (689, 117819), (741, 109551), (1007, 80613), (1521, 53371), (2067, 39273), (2223, 36517), (2809, 28899), (3021, 26871), (3211, 25281), (6201, 13091), (8427, 9633), (8957, 9063)]