212312178

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1381}}^1$

素因数の和:1481

約数の個数: 80

約数和(自身を含む): 519725976

約数和(自身を除く): 307413798

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 73, 78, 81, 117, 146, 162, 219, 234, 351, 438, 657, 702, 949, 1053, 1314, 1381, 1898, 1971, 2106, 2762, 2847, 3942, 4143, 5694, 5913, 8286, 8541, 11826, 12429, 17082, 17953, 24858, 25623, 35906, 37287, 51246, 53859, 74574, 76869, 100813, 107718, 111861, 153738, 161577, 201626, 223722, 302439, 323154, 484731, 604878, 907317, 969462, 1310569, 1454193, 1814634, 2621138, 2721951, 2908386, 3931707, 5443902, 7863414, 8165853, 11795121, 16331706, 23590242, 35385363, 70770726, 106156089, 212312178]

約数ペア:

[(1, 212312178), (2, 106156089), (3, 70770726), (6, 35385363), (9, 23590242), (13, 16331706), (18, 11795121), (26, 8165853), (27, 7863414), (39, 5443902), (54, 3931707), (73, 2908386), (78, 2721951), (81, 2621138), (117, 1814634), (146, 1454193), (162, 1310569), (219, 969462), (234, 907317), (351, 604878), (438, 484731), (657, 323154), (702, 302439), (949, 223722), (1053, 201626), (1314, 161577), (1381, 153738), (1898, 111861), (1971, 107718), (2106, 100813), (2762, 76869), (2847, 74574), (3942, 53859), (4143, 51246), (5694, 37287), (5913, 35906), (8286, 25623), (8541, 24858), (11826, 17953), (12429, 17082)]