81856215

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{37123}}^1$

素因数の和:37148

約数の個数: 36

約数和(自身を含む): 165053304

約数和(自身を除く): 83197089

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 37123, 111369, 185615, 259861, 334107, 556845, 779583, 1299305, 1670535, 1819027, 2338749, 3897915, 5457081, 9095135, 11693745, 16371243, 27285405, 81856215]

約数ペア:

[(1, 81856215), (3, 27285405), (5, 16371243), (7, 11693745), (9, 9095135), (15, 5457081), (21, 3897915), (35, 2338749), (45, 1819027), (49, 1670535), (63, 1299305), (105, 779583), (147, 556845), (245, 334107), (315, 259861), (441, 185615), (735, 111369), (2205, 37123)]