20123768518

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{21453911}}^1$

素因数の和:21453987

約数の個数: 16

約数和(自身を含む): 35012784384

約数和(自身を除く): 14889015866

約数列:

[1, 2, 7, 14, 67, 134, 469, 938, 21453911, 42907822, 150177377, 300354754, 1437412037, 2874824074, 10061884259, 20123768518]

約数ペア:

[(1, 20123768518), (2, 10061884259), (7, 2874824074), (14, 1437412037), (67, 300354754), (134, 150177377), (469, 42907822), (938, 21453911)]