21371649

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{1237}}^1$

素因数の和:1696

約数の個数: 16

約数和(自身を含む): 30781632

約数和(自身を除く): 9409983

約数列:

[1, 3, 13, 39, 443, 1237, 1329, 3711, 5759, 16081, 17277, 48243, 547991, 1643973, 7123883, 21371649]

約数ペア:

[(1, 21371649), (3, 7123883), (13, 1643973), (39, 547991), (443, 48243), (1237, 17277), (1329, 16081), (3711, 5759)]