81878706

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:265

約数の個数: 144

約数和(自身を含む): 229431384

約数和(自身を除く): 147552678

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 37, 39, 42, 49, 63, 74, 78, 91, 98, 111, 117, 126, 147, 182, 193, 222, 234, 259, 273, 294, 333, 386, 441, 481, 518, 546, 579, 637, 666, 777, 819, 882, 962, 1158, 1274, 1351, 1443, 1554, 1638, 1737, 1813, 1911, 2331, 2509, 2702, 2886, 3367, 3474, 3626, 3822, 4053, 4329, 4662, 5018, 5439, 5733, 6734, 7141, 7527, 8106, 8658, 9457, 10101, 10878, 11466, 12159, 14282, 15054, 16317, 17563, 18914, 20202, 21423, 22581, 23569, 24318, 28371, 30303, 32634, 35126, 42846, 45162, 47138, 49987, 52689, 56742, 60606, 64269, 70707, 85113, 92833, 99974, 105378, 122941, 128538, 141414, 149961, 158067, 170226, 185666, 212121, 245882, 278499, 299922, 316134, 349909, 368823, 424242, 449883, 556998, 649831, 699818, 737646, 835497, 899766, 1049727, 1106469, 1299662, 1670994, 1949493, 2099454, 2212938, 3149181, 3898986, 4548817, 5848479, 6298362, 9097634, 11696958, 13646451, 27292902, 40939353, 81878706]

約数ペア:

[(1, 81878706), (2, 40939353), (3, 27292902), (6, 13646451), (7, 11696958), (9, 9097634), (13, 6298362), (14, 5848479), (18, 4548817), (21, 3898986), (26, 3149181), (37, 2212938), (39, 2099454), (42, 1949493), (49, 1670994), (63, 1299662), (74, 1106469), (78, 1049727), (91, 899766), (98, 835497), (111, 737646), (117, 699818), (126, 649831), (147, 556998), (182, 449883), (193, 424242), (222, 368823), (234, 349909), (259, 316134), (273, 299922), (294, 278499), (333, 245882), (386, 212121), (441, 185666), (481, 170226), (518, 158067), (546, 149961), (579, 141414), (637, 128538), (666, 122941), (777, 105378), (819, 99974), (882, 92833), (962, 85113), (1158, 70707), (1274, 64269), (1351, 60606), (1443, 56742), (1554, 52689), (1638, 49987), (1737, 47138), (1813, 45162), (1911, 42846), (2331, 35126), (2509, 32634), (2702, 30303), (2886, 28371), (3367, 24318), (3474, 23569), (3626, 22581), (3822, 21423), (4053, 20202), (4329, 18914), (4662, 17563), (5018, 16317), (5439, 15054), (5733, 14282), (6734, 12159), (7141, 11466), (7527, 10878), (8106, 10101), (8658, 9457)]