20197983

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{907}}^1$

素因数の和:1494

約数の個数: 16

約数和(自身を含む): 29085056

約数和(自身を除く): 8887073

約数列:

[1, 3, 13, 39, 571, 907, 1713, 2721, 7423, 11791, 22269, 35373, 517897, 1553691, 6732661, 20197983]

約数ペア:

[(1, 20197983), (3, 6732661), (13, 1553691), (39, 517897), (571, 35373), (907, 22269), (1713, 11791), (2721, 7423)]