21091544

素因数分解:

$2^3\times {\mathrm{71}}^2\times {\mathrm{523}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 40188180

約数和(自身を除く): 19096636

約数列:

[1, 2, 4, 8, 71, 142, 284, 523, 568, 1046, 2092, 4184, 5041, 10082, 20164, 37133, 40328, 74266, 148532, 297064, 2636443, 5272886, 10545772, 21091544]

約数ペア:

[(1, 21091544), (2, 10545772), (4, 5272886), (8, 2636443), (71, 297064), (142, 148532), (284, 74266), (523, 40328), (568, 37133), (1046, 20164), (2092, 10082), (4184, 5041)]