221277

素因数分解:

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

素因数の和:308

約数の個数: 16

約数和(自身を含む): 346752

約数和(自身を除く): 125475

約数列:

[1, 3, 7, 21, 41, 123, 257, 287, 771, 861, 1799, 5397, 10537, 31611, 73759, 221277]

約数ペア:

[(1, 221277), (3, 73759), (7, 31611), (21, 10537), (41, 5397), (123, 1799), (257, 861), (287, 771)]