18970861

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{12263}}^1$

素因数の和:12300

約数の個数: 16

約数和(自身を含む): 24724224

約数和(自身を除く): 5753363

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 12263, 85841, 159419, 208471, 1115933, 1459297, 2710123, 18970861]

約数ペア:

[(1, 18970861), (7, 2710123), (13, 1459297), (17, 1115933), (91, 208471), (119, 159419), (221, 85841), (1547, 12263)]