21512288

素因数分解:

$2^5\times 7^1\times {\mathrm{137}}^1\times {\mathrm{701}}^1$

素因数の和:855

約数の個数: 48

約数和(自身を含む): 48825504

約数和(自身を除く): 27313216

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 137, 224, 274, 548, 701, 959, 1096, 1402, 1918, 2192, 2804, 3836, 4384, 4907, 5608, 7672, 9814, 11216, 15344, 19628, 22432, 30688, 39256, 78512, 96037, 157024, 192074, 384148, 672259, 768296, 1344518, 1536592, 2689036, 3073184, 5378072, 10756144, 21512288]

約数ペア:

[(1, 21512288), (2, 10756144), (4, 5378072), (7, 3073184), (8, 2689036), (14, 1536592), (16, 1344518), (28, 768296), (32, 672259), (56, 384148), (112, 192074), (137, 157024), (224, 96037), (274, 78512), (548, 39256), (701, 30688), (959, 22432), (1096, 19628), (1402, 15344), (1918, 11216), (2192, 9814), (2804, 7672), (3836, 5608), (4384, 4907)]