21372501

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 29030400

約数和(自身を除く): 7657899

約数列:

[1, 3, 107, 139, 321, 417, 479, 1437, 14873, 44619, 51253, 66581, 153759, 199743, 7124167, 21372501]

約数ペア:

[(1, 21372501), (3, 7124167), (107, 199743), (139, 153759), (321, 66581), (417, 51253), (479, 44619), (1437, 14873)]