20843949

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 33352704

約数和(自身を除く): 12508755

約数列:

[1, 3, 7, 21, 41, 43, 123, 129, 287, 301, 563, 861, 903, 1689, 1763, 3941, 5289, 11823, 12341, 23083, 24209, 37023, 69249, 72627, 161581, 169463, 484743, 508389, 992569, 2977707, 6947983, 20843949]

約数ペア:

[(1, 20843949), (3, 6947983), (7, 2977707), (21, 992569), (41, 508389), (43, 484743), (123, 169463), (129, 161581), (287, 72627), (301, 69249), (563, 37023), (861, 24209), (903, 23083), (1689, 12341), (1763, 11823), (3941, 5289)]