20770520

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1471}}^1$

素因数の和:1835

約数の個数: 32

約数和(自身を含む): 46897920

約数和(自身を除く): 26127400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1471, 1765, 2824, 2942, 3530, 5884, 7060, 7355, 11768, 14120, 14710, 29420, 58840, 519263, 1038526, 2077052, 2596315, 4154104, 5192630, 10385260, 20770520]

約数ペア:

[(1, 20770520), (2, 10385260), (4, 5192630), (5, 4154104), (8, 2596315), (10, 2077052), (20, 1038526), (40, 519263), (353, 58840), (706, 29420), (1412, 14710), (1471, 14120), (1765, 11768), (2824, 7355), (2942, 7060), (3530, 5884)]