21286499

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1579}}^1$

素因数の和:1670

約数の個数: 16

約数和(自身を含む): 24685920

約数和(自身を除く): 3399421

約数列:

[1, 13, 17, 61, 221, 793, 1037, 1579, 13481, 20527, 26843, 96319, 348959, 1252147, 1637423, 21286499]

約数ペア:

[(1, 21286499), (13, 1637423), (17, 1252147), (61, 348959), (221, 96319), (793, 26843), (1037, 20527), (1579, 13481)]