21056637

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{9371}}^1$

素因数の和:9488

約数の個数: 16

約数和(自身を含む): 32389632

約数和(自身を除く): 11332995

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 9371, 28113, 65597, 196791, 1002697, 3008091, 7018879, 21056637]

約数ペア:

[(1, 21056637), (3, 7018879), (7, 3008091), (21, 1002697), (107, 196791), (321, 65597), (749, 28113), (2247, 9371)]