1991493

素因数分解:

$3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 3467520

約数和(自身を除く): 1476027

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 123, 189, 257, 287, 369, 771, 861, 1107, 1799, 2313, 2583, 5397, 6939, 7749, 10537, 16191, 31611, 48573, 73759, 94833, 221277, 284499, 663831, 1991493]

約数ペア:

[(1, 1991493), (3, 663831), (7, 284499), (9, 221277), (21, 94833), (27, 73759), (41, 48573), (63, 31611), (123, 16191), (189, 10537), (257, 7749), (287, 6939), (369, 5397), (771, 2583), (861, 2313), (1107, 1799)]