2639871

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 4472160

約数和(自身を除く): 1832289

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 109, 117, 207, 299, 327, 351, 621, 897, 981, 1053, 1417, 1863, 2507, 2691, 2943, 4251, 7521, 8073, 8829, 12753, 22563, 24219, 32591, 38259, 67689, 97773, 114777, 203067, 293319, 879957, 2639871]

約数ペア:

[(1, 2639871), (3, 879957), (9, 293319), (13, 203067), (23, 114777), (27, 97773), (39, 67689), (69, 38259), (81, 32591), (109, 24219), (117, 22563), (207, 12753), (299, 8829), (327, 8073), (351, 7521), (621, 4251), (897, 2943), (981, 2691), (1053, 2507), (1417, 1863)]