21349521

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41617}}^1$

素因数の和:41645

約数の個数: 16

約数和(自身を含む): 33294400

約数和(自身を除く): 11944879

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41617, 124851, 374553, 790723, 1123659, 2372169, 7116507, 21349521]

約数ペア:

[(1, 21349521), (3, 7116507), (9, 2372169), (19, 1123659), (27, 790723), (57, 374553), (171, 124851), (513, 41617)]