278524209

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{887}}^1$

素因数の和:1085

約数の個数: 32

約数和(自身を含む): 405098496

約数和(自身を除く): 126574287

約数列:

[1, 3, 17, 47, 51, 131, 141, 393, 799, 887, 2227, 2397, 2661, 6157, 6681, 15079, 18471, 41689, 45237, 104669, 116197, 125067, 314007, 348591, 708713, 1975349, 2126139, 5461259, 5926047, 16383777, 92841403, 278524209]

約数ペア:

[(1, 278524209), (3, 92841403), (17, 16383777), (47, 5926047), (51, 5461259), (131, 2126139), (141, 1975349), (393, 708713), (799, 348591), (887, 314007), (2227, 125067), (2397, 116197), (2661, 104669), (6157, 45237), (6681, 41689), (15079, 18471)]