21135147

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{4889}}^1$

素因数の和:5034

約数の個数: 16

約数和(自身を含む): 30983040

約数和(自身を除く): 9847893

約数列:

[1, 3, 11, 33, 131, 393, 1441, 4323, 4889, 14667, 53779, 161337, 640459, 1921377, 7045049, 21135147]

約数ペア:

[(1, 21135147), (3, 7045049), (11, 1921377), (33, 640459), (131, 161337), (393, 53779), (1441, 14667), (4323, 4889)]