663447

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 16

約数和(自身を含む): 936320

約数和(自身を除く): 272873

約数列:

[1, 3, 37, 43, 111, 129, 139, 417, 1591, 4773, 5143, 5977, 15429, 17931, 221149, 663447]

約数ペア:

[(1, 663447), (3, 221149), (37, 17931), (43, 15429), (111, 5977), (129, 5143), (139, 4773), (417, 1591)]