20913309

素因数分解:

$3^5\times {\mathrm{89}}^1\times {\mathrm{967}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 10798371

約数列:

[1, 3, 9, 27, 81, 89, 243, 267, 801, 967, 2403, 2901, 7209, 8703, 21627, 26109, 78327, 86063, 234981, 258189, 774567, 2323701, 6971103, 20913309]

約数ペア:

[(1, 20913309), (3, 6971103), (9, 2323701), (27, 774567), (81, 258189), (89, 234981), (243, 86063), (267, 78327), (801, 26109), (967, 21627), (2403, 8703), (2901, 7209)]