21188247

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:702

約数の個数: 16

約数和(自身を含む): 28771200

約数和(自身を除く): 7582953

約数列:

[1, 3, 107, 149, 321, 443, 447, 1329, 15943, 47401, 47829, 66007, 142203, 198021, 7062749, 21188247]

約数ペア:

[(1, 21188247), (3, 7062749), (107, 198021), (149, 142203), (321, 66007), (443, 47829), (447, 47401), (1329, 15943)]