21250551

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43997}}^1$

素因数の和:44030

約数の個数: 16

約数和(自身を含む): 33790464

約数和(自身を除く): 12539913

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43997, 131991, 307979, 923937, 1011931, 3035793, 7083517, 21250551]

約数ペア:

[(1, 21250551), (3, 7083517), (7, 3035793), (21, 1011931), (23, 923937), (69, 307979), (161, 131991), (483, 43997)]