21045927

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6637}}^1$

素因数の和:6798

約数の個数: 16

約数和(自身を含む): 32287232

約数和(自身を除く): 11241305

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6637, 19911, 46459, 139377, 1002187, 3006561, 7015309, 21045927]

約数ペア:

[(1, 21045927), (3, 7015309), (7, 3006561), (21, 1002187), (151, 139377), (453, 46459), (1057, 19911), (3171, 6637)]