21247653

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43991}}^1$

素因数の和:44024

約数の個数: 16

約数和(自身を含む): 33785856

約数和(自身を除く): 12538203

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43991, 131973, 307937, 923811, 1011793, 3035379, 7082551, 21247653]

約数ペア:

[(1, 21247653), (3, 7082551), (7, 3035379), (21, 1011793), (23, 923811), (69, 307937), (161, 131973), (483, 43991)]