81347245

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{21323}}^1$

素因数の和:21444

約数の個数: 16

約数和(自身を含む): 112590720

約数和(自身を除く): 31243475

約数列:

[1, 5, 7, 35, 109, 545, 763, 3815, 21323, 106615, 149261, 746305, 2324207, 11621035, 16269449, 81347245]

約数ペア:

[(1, 81347245), (5, 16269449), (7, 11621035), (35, 2324207), (109, 746305), (545, 149261), (763, 106615), (3815, 21323)]