20686211

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2207}}^1$

素因数の和:2330

約数の個数: 16

約数和(自身を含む): 25718784

約数和(自身を除く): 5032573

約数列:

[1, 7, 13, 91, 103, 721, 1339, 2207, 9373, 15449, 28691, 200837, 227321, 1591247, 2955173, 20686211]

約数ペア:

[(1, 20686211), (7, 2955173), (13, 1591247), (91, 227321), (103, 200837), (721, 28691), (1339, 15449), (2207, 9373)]