21120138

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2099}}^1$

素因数の和:2163

約数の個数: 48

約数和(自身を含む): 50450400

約数和(自身を除く): 29330262

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 2099, 3354, 4198, 5031, 6297, 10062, 12594, 18891, 27287, 37782, 54574, 81861, 90257, 163722, 180514, 245583, 270771, 491166, 541542, 812313, 1173341, 1624626, 2346682, 3520023, 7040046, 10560069, 21120138]

約数ペア:

[(1, 21120138), (2, 10560069), (3, 7040046), (6, 3520023), (9, 2346682), (13, 1624626), (18, 1173341), (26, 812313), (39, 541542), (43, 491166), (78, 270771), (86, 245583), (117, 180514), (129, 163722), (234, 90257), (258, 81861), (387, 54574), (559, 37782), (774, 27287), (1118, 18891), (1677, 12594), (2099, 10062), (3354, 6297), (4198, 5031)]