21681306

素因数分解:

$2^1\times 3^2\times {\mathrm{443}}^1\times {\mathrm{2719}}^1$

素因数の和:3170

約数の個数: 24

約数和(自身を含む): 47099520

約数和(自身を除く): 25418214

約数列:

[1, 2, 3, 6, 9, 18, 443, 886, 1329, 2658, 2719, 3987, 5438, 7974, 8157, 16314, 24471, 48942, 1204517, 2409034, 3613551, 7227102, 10840653, 21681306]

約数ペア:

[(1, 21681306), (2, 10840653), (3, 7227102), (6, 3613551), (9, 2409034), (18, 1204517), (443, 48942), (886, 24471), (1329, 16314), (2658, 8157), (2719, 7974), (3987, 5438)]