21042268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{3089}}^1$

素因数の和:3237

約数の個数: 24

約数和(自身を含む): 39972240

約数和(自身を除く): 18929972

約数列:

[1, 2, 4, 13, 26, 52, 131, 262, 524, 1703, 3089, 3406, 6178, 6812, 12356, 40157, 80314, 160628, 404659, 809318, 1618636, 5260567, 10521134, 21042268]

約数ペア:

[(1, 21042268), (2, 10521134), (4, 5260567), (13, 1618636), (26, 809318), (52, 404659), (131, 160628), (262, 80314), (524, 40157), (1703, 12356), (3089, 6812), (3406, 6178)]