21381136

素因数分解:

$2^4\times 7^1\times {\mathrm{349}}^1\times {\mathrm{547}}^1$

素因数の和:911

約数の個数: 40

約数和(自身を含む): 47566400

約数和(自身を除く): 26185264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 349, 547, 698, 1094, 1396, 2188, 2443, 2792, 3829, 4376, 4886, 5584, 7658, 8752, 9772, 15316, 19544, 30632, 39088, 61264, 190903, 381806, 763612, 1336321, 1527224, 2672642, 3054448, 5345284, 10690568, 21381136]

約数ペア:

[(1, 21381136), (2, 10690568), (4, 5345284), (7, 3054448), (8, 2672642), (14, 1527224), (16, 1336321), (28, 763612), (56, 381806), (112, 190903), (349, 61264), (547, 39088), (698, 30632), (1094, 19544), (1396, 15316), (2188, 9772), (2443, 8752), (2792, 7658), (3829, 5584), (4376, 4886)]