21397544

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 27850456

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 37, 46, 56, 74, 92, 148, 161, 184, 259, 296, 322, 449, 518, 644, 851, 898, 1036, 1288, 1702, 1796, 2072, 3143, 3404, 3592, 5957, 6286, 6808, 10327, 11914, 12572, 16613, 20654, 23828, 25144, 33226, 41308, 47656, 66452, 72289, 82616, 116291, 132904, 144578, 232582, 289156, 382099, 465164, 578312, 764198, 930328, 1528396, 2674693, 3056792, 5349386, 10698772, 21397544]

約数ペア:

[(1, 21397544), (2, 10698772), (4, 5349386), (7, 3056792), (8, 2674693), (14, 1528396), (23, 930328), (28, 764198), (37, 578312), (46, 465164), (56, 382099), (74, 289156), (92, 232582), (148, 144578), (161, 132904), (184, 116291), (259, 82616), (296, 72289), (322, 66452), (449, 47656), (518, 41308), (644, 33226), (851, 25144), (898, 23828), (1036, 20654), (1288, 16613), (1702, 12572), (1796, 11914), (2072, 10327), (3143, 6808), (3404, 6286), (3592, 5957)]