19947109

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2011}}^1$

素因数の和:2140

約数の個数: 16

約数和(自身を含む): 24787840

約数和(自身を除く): 4840731

約数列:

[1, 7, 13, 91, 109, 763, 1417, 2011, 9919, 14077, 26143, 183001, 219199, 1534393, 2849587, 19947109]

約数ペア:

[(1, 19947109), (7, 2849587), (13, 1534393), (91, 219199), (109, 183001), (763, 26143), (1417, 14077), (2011, 9919)]