21005560894

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^2\times {\mathrm{137}}^1\times {\mathrm{1931}}^1$

素因数の和:2173

約数の個数: 48

約数和(自身を含む): 33761584080

約数和(自身を除く): 12756023186

約数列:

[1, 2, 29, 37, 58, 74, 137, 274, 1073, 1369, 1931, 2146, 2738, 3862, 3973, 5069, 7946, 10138, 39701, 55999, 71447, 79402, 111998, 142894, 147001, 187553, 264547, 294002, 375106, 529094, 2071963, 2643539, 4143926, 5287078, 5439037, 7671863, 9788239, 10878074, 15343726, 19576478, 76662631, 153325262, 283858931, 362164843, 567717862, 724329686, 10502780447, 21005560894]

約数ペア:

[(1, 21005560894), (2, 10502780447), (29, 724329686), (37, 567717862), (58, 362164843), (74, 283858931), (137, 153325262), (274, 76662631), (1073, 19576478), (1369, 15343726), (1931, 10878074), (2146, 9788239), (2738, 7671863), (3862, 5439037), (3973, 5287078), (5069, 4143926), (7946, 2643539), (10138, 2071963), (39701, 529094), (55999, 375106), (71447, 294002), (79402, 264547), (111998, 187553), (142894, 147001)]