81911921

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31039}}^1$

素因数の和:31088

約数の個数: 16

約数和(自身を含む): 104294400

約数和(自身を除く): 22382479

約数列:

[1, 7, 13, 29, 91, 203, 377, 2639, 31039, 217273, 403507, 900131, 2824549, 6300917, 11701703, 81911921]

約数ペア:

[(1, 81911921), (7, 11701703), (13, 6300917), (29, 2824549), (91, 900131), (203, 403507), (377, 217273), (2639, 31039)]