21308397

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{15749}}^1$

素因数の和:15804

約数の個数: 16

約数和(自身を含む): 31752000

約数和(自身を除く): 10443603

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 15749, 47247, 173239, 519717, 645709, 1937127, 7102799, 21308397]

約数ペア:

[(1, 21308397), (3, 7102799), (11, 1937127), (33, 645709), (41, 519717), (123, 173239), (451, 47247), (1353, 15749)]