21839787

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3413}}^1$

素因数の和:3504

約数の個数: 20

約数和(自身を含む): 33047520

約数和(自身を除く): 11207733

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3413, 6399, 10239, 30717, 92151, 269627, 276453, 808881, 2426643, 7279929, 21839787]

約数ペア:

[(1, 21839787), (3, 7279929), (9, 2426643), (27, 808881), (79, 276453), (81, 269627), (237, 92151), (711, 30717), (2133, 10239), (3413, 6399)]