81871317

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 135495360

約数和(自身を除く): 53624043

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 109, 243, 281, 297, 327, 843, 891, 981, 1199, 2529, 2673, 2943, 3091, 3597, 7587, 8829, 9273, 10791, 22761, 26487, 27819, 30629, 32373, 68283, 83457, 91887, 97119, 250371, 275661, 291357, 336919, 751113, 826983, 1010757, 2480949, 3032271, 7442847, 9096813, 27290439, 81871317]

約数ペア:

[(1, 81871317), (3, 27290439), (9, 9096813), (11, 7442847), (27, 3032271), (33, 2480949), (81, 1010757), (99, 826983), (109, 751113), (243, 336919), (281, 291357), (297, 275661), (327, 250371), (843, 97119), (891, 91887), (981, 83457), (1199, 68283), (2529, 32373), (2673, 30629), (2943, 27819), (3091, 26487), (3597, 22761), (7587, 10791), (8829, 9273)]