664281

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:210

約数の個数: 20

約数和(自身を含む): 1016400

約数和(自身を除く): 352119

約数列:

[1, 3, 9, 27, 59, 81, 139, 177, 417, 531, 1251, 1593, 3753, 4779, 8201, 11259, 24603, 73809, 221427, 664281]

約数ペア:

[(1, 664281), (3, 221427), (9, 73809), (27, 24603), (59, 11259), (81, 8201), (139, 4779), (177, 3753), (417, 1593), (531, 1251)]