20494369

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{691}}^1$

素因数の和:940

約数の個数: 16

約数和(自身を含む): 24801280

約数和(自身を除く): 4306911

約数列:

[1, 7, 19, 133, 223, 691, 1561, 4237, 4837, 13129, 29659, 91903, 154093, 1078651, 2927767, 20494369]

約数ペア:

[(1, 20494369), (7, 2927767), (19, 1078651), (133, 154093), (223, 91903), (691, 29659), (1561, 13129), (4237, 4837)]