21653645

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{2543}}^1$

素因数の和:2692

約数の個数: 16

約数和(自身を含む): 28207872

約数和(自身を除く): 6554227

約数列:

[1, 5, 13, 65, 131, 655, 1703, 2543, 8515, 12715, 33059, 165295, 333133, 1665665, 4330729, 21653645]

約数ペア:

[(1, 21653645), (5, 4330729), (13, 1665665), (65, 333133), (131, 165295), (655, 33059), (1703, 12715), (2543, 8515)]