20517351

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 30336768

約数和(自身を除く): 9819417

約数列:

[1, 3, 17, 37, 51, 83, 111, 131, 249, 393, 629, 1411, 1887, 2227, 3071, 4233, 4847, 6681, 9213, 10873, 14541, 32619, 52207, 82399, 156621, 184841, 247197, 402301, 554523, 1206903, 6839117, 20517351]

約数ペア:

[(1, 20517351), (3, 6839117), (17, 1206903), (37, 554523), (51, 402301), (83, 247197), (111, 184841), (131, 156621), (249, 82399), (393, 52207), (629, 32619), (1411, 14541), (1887, 10873), (2227, 9213), (3071, 6681), (4233, 4847)]