81399724

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{8053}}^1$

素因数の和:8102

約数の個数: 36

約数和(自身を含む): 171840144

約数和(自身を除く): 90440420

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 361, 532, 722, 1444, 2527, 5054, 8053, 10108, 16106, 32212, 56371, 112742, 153007, 225484, 306014, 612028, 1071049, 2142098, 2907133, 4284196, 5814266, 11628532, 20349931, 40699862, 81399724]

約数ペア:

[(1, 81399724), (2, 40699862), (4, 20349931), (7, 11628532), (14, 5814266), (19, 4284196), (28, 2907133), (38, 2142098), (76, 1071049), (133, 612028), (266, 306014), (361, 225484), (532, 153007), (722, 112742), (1444, 56371), (2527, 32212), (5054, 16106), (8053, 10108)]