81965639

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{10103}}^1$

素因数の和:10190

約数の個数: 16

約数和(自身を含む): 100231680

約数和(自身を除く): 18266041

約数列:

[1, 7, 19, 61, 133, 427, 1159, 8113, 10103, 70721, 191957, 616283, 1343699, 4313981, 11709377, 81965639]

約数ペア:

[(1, 81965639), (7, 11709377), (19, 4313981), (61, 1343699), (133, 616283), (427, 191957), (1159, 70721), (8113, 10103)]