21530782

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{421}}^1$

素因数の和:724

約数の個数: 32

約数和(自身を含む): 39985344

約数和(自身を除く): 18454562

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 281, 421, 562, 842, 1967, 2947, 3653, 3934, 5473, 5894, 7306, 10946, 25571, 38311, 51142, 76622, 118301, 236602, 828107, 1537913, 1656214, 3075826, 10765391, 21530782]

約数ペア:

[(1, 21530782), (2, 10765391), (7, 3075826), (13, 1656214), (14, 1537913), (26, 828107), (91, 236602), (182, 118301), (281, 76622), (421, 51142), (562, 38311), (842, 25571), (1967, 10946), (2947, 7306), (3653, 5894), (3934, 5473)]