21085316

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18367}}^1$

素因数の和:18419

約数の個数: 24

約数和(自身を含む): 43201536

約数和(自身を除く): 22116220

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18367, 36734, 73468, 128569, 257138, 514276, 753047, 1506094, 3012188, 5271329, 10542658, 21085316]

約数ペア:

[(1, 21085316), (2, 10542658), (4, 5271329), (7, 3012188), (14, 1506094), (28, 753047), (41, 514276), (82, 257138), (164, 128569), (287, 73468), (574, 36734), (1148, 18367)]