64401320

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{4561}}^1$

素因数の和:4925

約数の個数: 32

約数和(自身を含む): 145345320

約数和(自身を除く): 80944000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 4561, 7060, 9122, 14120, 18244, 22805, 36488, 45610, 91220, 182440, 1610033, 3220066, 6440132, 8050165, 12880264, 16100330, 32200660, 64401320]

約数ペア:

[(1, 64401320), (2, 32200660), (4, 16100330), (5, 12880264), (8, 8050165), (10, 6440132), (20, 3220066), (40, 1610033), (353, 182440), (706, 91220), (1412, 45610), (1765, 36488), (2824, 22805), (3530, 18244), (4561, 14120), (7060, 9122)]