81071340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^2$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 269482752

約数和(自身を除く): 188411412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 43, 60, 67, 70, 84, 86, 105, 129, 134, 140, 172, 201, 210, 215, 258, 268, 301, 335, 402, 420, 430, 469, 516, 602, 645, 670, 804, 860, 903, 938, 1005, 1204, 1290, 1340, 1407, 1505, 1806, 1876, 2010, 2345, 2580, 2814, 2881, 3010, 3612, 4020, 4489, 4515, 4690, 5628, 5762, 6020, 7035, 8643, 8978, 9030, 9380, 11524, 13467, 14070, 14405, 17286, 17956, 18060, 20167, 22445, 26934, 28140, 28810, 31423, 34572, 40334, 43215, 44890, 53868, 57620, 60501, 62846, 67335, 80668, 86430, 89780, 94269, 100835, 121002, 125692, 134670, 157115, 172860, 188538, 193027, 201670, 242004, 269340, 302505, 314230, 377076, 386054, 403340, 471345, 579081, 605010, 628460, 772108, 942690, 965135, 1158162, 1210020, 1351189, 1885380, 1930270, 2316324, 2702378, 2895405, 3860540, 4053567, 5404756, 5790810, 6755945, 8107134, 11581620, 13511890, 16214268, 20267835, 27023780, 40535670, 81071340]

約数ペア:

[(1, 81071340), (2, 40535670), (3, 27023780), (4, 20267835), (5, 16214268), (6, 13511890), (7, 11581620), (10, 8107134), (12, 6755945), (14, 5790810), (15, 5404756), (20, 4053567), (21, 3860540), (28, 2895405), (30, 2702378), (35, 2316324), (42, 1930270), (43, 1885380), (60, 1351189), (67, 1210020), (70, 1158162), (84, 965135), (86, 942690), (105, 772108), (129, 628460), (134, 605010), (140, 579081), (172, 471345), (201, 403340), (210, 386054), (215, 377076), (258, 314230), (268, 302505), (301, 269340), (335, 242004), (402, 201670), (420, 193027), (430, 188538), (469, 172860), (516, 157115), (602, 134670), (645, 125692), (670, 121002), (804, 100835), (860, 94269), (903, 89780), (938, 86430), (1005, 80668), (1204, 67335), (1290, 62846), (1340, 60501), (1407, 57620), (1505, 53868), (1806, 44890), (1876, 43215), (2010, 40334), (2345, 34572), (2580, 31423), (2814, 28810), (2881, 28140), (3010, 26934), (3612, 22445), (4020, 20167), (4489, 18060), (4515, 17956), (4690, 17286), (5628, 14405), (5762, 14070), (6020, 13467), (7035, 11524), (8643, 9380), (8978, 9030)]