21991254

素因数分解:

$2^1\times 3^1\times {\mathrm{1559}}^1\times {\mathrm{2351}}^1$

素因数の和:3915

約数の個数: 16

約数和(自身を含む): 44029440

約数和(自身を除く): 22038186

約数列:

[1, 2, 3, 6, 1559, 2351, 3118, 4677, 4702, 7053, 9354, 14106, 3665209, 7330418, 10995627, 21991254]

約数ペア:

[(1, 21991254), (2, 10995627), (3, 7330418), (6, 3665209), (1559, 14106), (2351, 9354), (3118, 7053), (4677, 4702)]