18721339

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{491}}^1$

素因数の和:930

約数の個数: 16

約数和(自身を含む): 23143680

約数和(自身を除く): 4422341

約数列:

[1, 7, 13, 91, 419, 491, 2933, 3437, 5447, 6383, 38129, 44681, 205729, 1440103, 2674477, 18721339]

約数ペア:

[(1, 18721339), (7, 2674477), (13, 1440103), (91, 205729), (419, 44681), (491, 38129), (2933, 6383), (3437, 5447)]