21036351

素因数分解:

$3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{3221}}^1$

素因数の和:3542

約数の個数: 16

約数和(自身を含む): 32168448

約数和(自身を除く): 11132097

約数列:

[1, 3, 7, 21, 311, 933, 2177, 3221, 6531, 9663, 22547, 67641, 1001731, 3005193, 7012117, 21036351]

約数ペア:

[(1, 21036351), (3, 7012117), (7, 3005193), (21, 1001731), (311, 67641), (933, 22547), (2177, 9663), (3221, 6531)]