18663669

素因数分解:

$3^3\times {\mathrm{139}}^1\times {\mathrm{4973}}^1$

素因数の和:5121

約数の個数: 16

約数和(自身を含む): 27854400

約数和(自身を除く): 9190731

約数列:

[1, 3, 9, 27, 139, 417, 1251, 3753, 4973, 14919, 44757, 134271, 691247, 2073741, 6221223, 18663669]

約数ペア:

[(1, 18663669), (3, 6221223), (9, 2073741), (27, 691247), (139, 134271), (417, 44757), (1251, 14919), (3753, 4973)]