21509308

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{1429}}^1$

素因数の和:1557

約数の個数: 24

約数和(自身を含む): 38918880

約数和(自身を除く): 17409572

約数列:

[1, 2, 4, 53, 71, 106, 142, 212, 284, 1429, 2858, 3763, 5716, 7526, 15052, 75737, 101459, 151474, 202918, 302948, 405836, 5377327, 10754654, 21509308]

約数ペア:

[(1, 21509308), (2, 10754654), (4, 5377327), (53, 405836), (71, 302948), (106, 202918), (142, 151474), (212, 101459), (284, 75737), (1429, 15052), (2858, 7526), (3763, 5716)]