21064538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{7309}}^1$

素因数の和:7453

約数の個数: 16

約数和(自身を含む): 34737120

約数和(自身を除く): 13672582

約数列:

[1, 2, 11, 22, 131, 262, 1441, 2882, 7309, 14618, 80399, 160798, 957479, 1914958, 10532269, 21064538]

約数ペア:

[(1, 21064538), (2, 10532269), (11, 1914958), (22, 957479), (131, 160798), (262, 80399), (1441, 14618), (2882, 7309)]