16991986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{33581}}^1$

素因数の和:33617

約数の個数: 16

約数和(自身を含む): 29014848

約数和(自身を除く): 12022862

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 33581, 67162, 369391, 738782, 772363, 1544726, 8495993, 16991986]

約数ペア:

[(1, 16991986), (2, 8495993), (11, 1544726), (22, 772363), (23, 738782), (46, 369391), (253, 67162), (506, 33581)]