208778320

素因数分解:

$2^4\times 5^1\times {\mathrm{353}}^1\times {\mathrm{7393}}^1$

素因数の和:7759

約数の個数: 40

約数和(自身を含む): 486850536

約数和(自身を除く): 278072216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 1412, 1765, 2824, 3530, 5648, 7060, 7393, 14120, 14786, 28240, 29572, 36965, 59144, 73930, 118288, 147860, 295720, 591440, 2609729, 5219458, 10438916, 13048645, 20877832, 26097290, 41755664, 52194580, 104389160, 208778320]

約数ペア:

[(1, 208778320), (2, 104389160), (4, 52194580), (5, 41755664), (8, 26097290), (10, 20877832), (16, 13048645), (20, 10438916), (40, 5219458), (80, 2609729), (353, 591440), (706, 295720), (1412, 147860), (1765, 118288), (2824, 73930), (3530, 59144), (5648, 36965), (7060, 29572), (7393, 28240), (14120, 14786)]