820940913

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{779621}}^1$

素因数の和:779646

約数の個数: 20

約数和(自身を含む): 1320679668

約数和(自身を除く): 499738755

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 779621, 2338863, 7016589, 10135073, 21049767, 30405219, 63149301, 91215657, 273646971, 820940913]

約数ペア:

[(1, 820940913), (3, 273646971), (9, 91215657), (13, 63149301), (27, 30405219), (39, 21049767), (81, 10135073), (117, 7016589), (351, 2338863), (1053, 779621)]