21705836

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{3323}}^1$

素因数の和:3421

約数の個数: 24

約数和(自身を含む): 40207104

約数和(自身を除く): 18501268

約数列:

[1, 2, 4, 23, 46, 71, 92, 142, 284, 1633, 3266, 3323, 6532, 6646, 13292, 76429, 152858, 235933, 305716, 471866, 943732, 5426459, 10852918, 21705836]

約数ペア:

[(1, 21705836), (2, 10852918), (4, 5426459), (23, 943732), (46, 471866), (71, 305716), (92, 235933), (142, 152858), (284, 76429), (1633, 13292), (3266, 6646), (3323, 6532)]