21742156

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{523}}^1\times {\mathrm{547}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 40201280

約数和(自身を除く): 18459124

約数列:

[1, 2, 4, 19, 38, 76, 523, 547, 1046, 1094, 2092, 2188, 9937, 10393, 19874, 20786, 39748, 41572, 286081, 572162, 1144324, 5435539, 10871078, 21742156]

約数ペア:

[(1, 21742156), (2, 10871078), (4, 5435539), (19, 1144324), (38, 572162), (76, 286081), (523, 41572), (547, 39748), (1046, 20786), (1094, 19874), (2092, 10393), (2188, 9937)]