81321748

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{199}}^1\times {\mathrm{283}}^1$

素因数の和:524

約数の個数: 36

約数和(自身を含む): 151485600

約数和(自身を除く): 70163852

約数列:

[1, 2, 4, 19, 38, 76, 199, 283, 361, 398, 566, 722, 796, 1132, 1444, 3781, 5377, 7562, 10754, 15124, 21508, 56317, 71839, 102163, 112634, 143678, 204326, 225268, 287356, 408652, 1070023, 2140046, 4280092, 20330437, 40660874, 81321748]

約数ペア:

[(1, 81321748), (2, 40660874), (4, 20330437), (19, 4280092), (38, 2140046), (76, 1070023), (199, 408652), (283, 287356), (361, 225268), (398, 204326), (566, 143678), (722, 112634), (796, 102163), (1132, 71839), (1444, 56317), (3781, 21508), (5377, 15124), (7562, 10754)]