20399684756

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42148109}}^1$

素因数の和:42148135

約数の個数: 18

約数和(自身を含む): 39239890410

約数和(自身を除く): 18840205654

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42148109, 84296218, 168592436, 463629199, 927258398, 1854516796, 5099921189, 10199842378, 20399684756]

約数ペア:

[(1, 20399684756), (2, 10199842378), (4, 5099921189), (11, 1854516796), (22, 927258398), (44, 463629199), (121, 168592436), (242, 84296218), (484, 42148109)]