81451215

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 146162016

約数和(自身を除く): 64710801

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 131, 205, 337, 369, 393, 615, 655, 1011, 1179, 1685, 1845, 1965, 3033, 5055, 5371, 5895, 13817, 15165, 16113, 26855, 41451, 44147, 48339, 69085, 80565, 124353, 132441, 207255, 220735, 241695, 397323, 621765, 662205, 1810027, 1986615, 5430081, 9050135, 16290243, 27150405, 81451215]

約数ペア:

[(1, 81451215), (3, 27150405), (5, 16290243), (9, 9050135), (15, 5430081), (41, 1986615), (45, 1810027), (123, 662205), (131, 621765), (205, 397323), (337, 241695), (369, 220735), (393, 207255), (615, 132441), (655, 124353), (1011, 80565), (1179, 69085), (1685, 48339), (1845, 44147), (1965, 41451), (3033, 26855), (5055, 16113), (5371, 15165), (5895, 13817)]