81726964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{26161}}^1$

素因数の和:26247

約数の個数: 24

約数和(自身を含む): 158227776

約数和(自身を除く): 76500812

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 26161, 52322, 104644, 287771, 575542, 1151084, 1857431, 3714862, 7429724, 20431741, 40863482, 81726964]

約数ペア:

[(1, 81726964), (2, 40863482), (4, 20431741), (11, 7429724), (22, 3714862), (44, 1857431), (71, 1151084), (142, 575542), (284, 287771), (781, 104644), (1562, 52322), (3124, 26161)]