121437981

素因数分解:

$3^3\times 7^1\times {\mathrm{642529}}^1$

素因数の和:642545

約数の個数: 16

約数和(自身を含む): 205609600

約数和(自身を除く): 84171619

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 642529, 1927587, 4497703, 5782761, 13493109, 17348283, 40479327, 121437981]

約数ペア:

[(1, 121437981), (3, 40479327), (7, 17348283), (9, 13493109), (21, 5782761), (27, 4497703), (63, 1927587), (189, 642529)]