21869109

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{7297}}^1$

素因数の和:7346

約数の個数: 20

約数和(自身を含む): 33556204

約数和(自身を除く): 11687095

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 7297, 21891, 65673, 197019, 269989, 591057, 809967, 2429901, 7289703, 21869109]

約数ペア:

[(1, 21869109), (3, 7289703), (9, 2429901), (27, 809967), (37, 591057), (81, 269989), (111, 197019), (333, 65673), (999, 21891), (2997, 7297)]