28685988

素因数分解:

$2^2\times 3^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 120

約数和(自身を含む): 80498880

約数和(自身を除く): 51812892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 29, 36, 43, 54, 58, 71, 81, 86, 87, 108, 116, 129, 142, 162, 172, 174, 213, 258, 261, 284, 324, 348, 387, 426, 516, 522, 639, 774, 783, 852, 1044, 1161, 1247, 1278, 1548, 1566, 1917, 2059, 2322, 2349, 2494, 2556, 3053, 3132, 3483, 3741, 3834, 4118, 4644, 4698, 4988, 5751, 6106, 6177, 6966, 7482, 7668, 8236, 9159, 9396, 11223, 11502, 12212, 12354, 13932, 14964, 18318, 18531, 22446, 23004, 24708, 27477, 33669, 36636, 37062, 44892, 54954, 55593, 67338, 74124, 82431, 88537, 101007, 109908, 111186, 134676, 164862, 166779, 177074, 202014, 222372, 247293, 265611, 329724, 333558, 354148, 404028, 494586, 531222, 667116, 796833, 989172, 1062444, 1593666, 2390499, 3187332, 4780998, 7171497, 9561996, 14342994, 28685988]

約数ペア:

[(1, 28685988), (2, 14342994), (3, 9561996), (4, 7171497), (6, 4780998), (9, 3187332), (12, 2390499), (18, 1593666), (27, 1062444), (29, 989172), (36, 796833), (43, 667116), (54, 531222), (58, 494586), (71, 404028), (81, 354148), (86, 333558), (87, 329724), (108, 265611), (116, 247293), (129, 222372), (142, 202014), (162, 177074), (172, 166779), (174, 164862), (213, 134676), (258, 111186), (261, 109908), (284, 101007), (324, 88537), (348, 82431), (387, 74124), (426, 67338), (516, 55593), (522, 54954), (639, 44892), (774, 37062), (783, 36636), (852, 33669), (1044, 27477), (1161, 24708), (1247, 23004), (1278, 22446), (1548, 18531), (1566, 18318), (1917, 14964), (2059, 13932), (2322, 12354), (2349, 12212), (2494, 11502), (2556, 11223), (3053, 9396), (3132, 9159), (3483, 8236), (3741, 7668), (3834, 7482), (4118, 6966), (4644, 6177), (4698, 6106), (4988, 5751)]