20654919

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13421}}^1$

素因数の和:13452

約数の個数: 20

約数和(自身を含む): 32481240

約数和(自身を除く): 11826321

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13421, 40263, 120789, 254999, 362367, 764997, 1087101, 2294991, 6884973, 20654919]

約数ペア:

[(1, 20654919), (3, 6884973), (9, 2294991), (19, 1087101), (27, 764997), (57, 362367), (81, 254999), (171, 120789), (513, 40263), (1539, 13421)]