645639

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:310

約数の個数: 16

約数和(自身を含む): 929280

約数和(自身を除く): 283641

約数列:

[1, 3, 19, 47, 57, 141, 241, 723, 893, 2679, 4579, 11327, 13737, 33981, 215213, 645639]

約数ペア:

[(1, 645639), (3, 215213), (19, 33981), (47, 13737), (57, 11327), (141, 4579), (241, 2679), (723, 893)]