19943901

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12959}}^1$

素因数の和:12990

約数の個数: 20

約数和(自身を含む): 31363200

約数和(自身を除く): 11419299

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12959, 38877, 116631, 246221, 349893, 738663, 1049679, 2215989, 6647967, 19943901]

約数ペア:

[(1, 19943901), (3, 6647967), (9, 2215989), (19, 1049679), (27, 738663), (57, 349893), (81, 246221), (171, 116631), (513, 38877), (1539, 12959)]