20464565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{1373}}^1$

素因数の和:1660

約数の個数: 16

約数和(自身を含む): 26908416

約数和(自身を除く): 6443851

約数列:

[1, 5, 11, 55, 271, 1355, 1373, 2981, 6865, 14905, 15103, 75515, 372083, 1860415, 4092913, 20464565]

約数ペア:

[(1, 20464565), (5, 4092913), (11, 1860415), (55, 372083), (271, 75515), (1355, 15103), (1373, 14905), (2981, 6865)]