81332559

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 128

約数和(自身を含む): 165888000

約数和(自身を除く): 84555441

約数列:

[1, 3, 7, 9, 11, 19, 21, 27, 29, 33, 57, 63, 71, 77, 87, 99, 133, 171, 189, 203, 209, 213, 231, 261, 297, 319, 399, 497, 513, 551, 609, 627, 639, 693, 781, 783, 957, 1197, 1349, 1463, 1491, 1653, 1827, 1881, 1917, 2059, 2079, 2233, 2343, 2871, 3591, 3857, 4047, 4389, 4473, 4959, 5467, 5481, 5643, 6061, 6177, 6699, 7029, 8613, 9443, 11571, 12141, 13167, 13419, 14413, 14839, 14877, 16401, 18183, 18531, 20097, 21087, 22649, 28329, 34713, 36423, 39121, 39501, 42427, 43239, 44517, 49203, 54549, 55593, 60291, 67947, 84987, 103873, 104139, 117363, 127281, 129717, 133551, 147609, 158543, 163647, 203841, 254961, 273847, 311619, 352089, 381843, 389151, 400653, 430331, 475629, 611523, 821541, 934857, 1056267, 1145529, 1290993, 1426887, 2464623, 2804571, 3012317, 3872979, 4280661, 7393869, 9036951, 11618937, 27110853, 81332559]

約数ペア:

[(1, 81332559), (3, 27110853), (7, 11618937), (9, 9036951), (11, 7393869), (19, 4280661), (21, 3872979), (27, 3012317), (29, 2804571), (33, 2464623), (57, 1426887), (63, 1290993), (71, 1145529), (77, 1056267), (87, 934857), (99, 821541), (133, 611523), (171, 475629), (189, 430331), (203, 400653), (209, 389151), (213, 381843), (231, 352089), (261, 311619), (297, 273847), (319, 254961), (399, 203841), (497, 163647), (513, 158543), (551, 147609), (609, 133551), (627, 129717), (639, 127281), (693, 117363), (781, 104139), (783, 103873), (957, 84987), (1197, 67947), (1349, 60291), (1463, 55593), (1491, 54549), (1653, 49203), (1827, 44517), (1881, 43239), (1917, 42427), (2059, 39501), (2079, 39121), (2233, 36423), (2343, 34713), (2871, 28329), (3591, 22649), (3857, 21087), (4047, 20097), (4389, 18531), (4473, 18183), (4959, 16401), (5467, 14877), (5481, 14839), (5643, 14413), (6061, 13419), (6177, 13167), (6699, 12141), (7029, 11571), (8613, 9443)]