21000512731

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{256639}}^1$

素因数の和:256866

約数の個数: 16

約数和(自身を含む): 23578030080

約数和(自身を除く): 2577517349

約数列:

[1, 11, 43, 173, 473, 1903, 7439, 81829, 256639, 2823029, 11035477, 44398547, 121390247, 488384017, 1909137521, 21000512731]

約数ペア:

[(1, 21000512731), (11, 1909137521), (43, 488384017), (173, 121390247), (473, 44398547), (1903, 11035477), (7439, 2823029), (81829, 256639)]