20864039

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{523}}^1$

素因数の和:710

約数の個数: 16

約数和(自身を含む): 24648960

約数和(自身を除く): 3784921

約数列:

[1, 7, 41, 139, 287, 523, 973, 3661, 5699, 21443, 39893, 72697, 150101, 508879, 2980577, 20864039]

約数ペア:

[(1, 20864039), (7, 2980577), (41, 508879), (139, 150101), (287, 72697), (523, 39893), (973, 21443), (3661, 5699)]