18809748

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:501

約数の個数: 72

約数和(自身を含む): 50450400

約数和(自身を除く): 31640652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 43, 58, 86, 87, 116, 129, 172, 174, 258, 261, 348, 387, 419, 516, 522, 774, 838, 1044, 1247, 1257, 1548, 1676, 2494, 2514, 3741, 3771, 4988, 5028, 7482, 7542, 11223, 12151, 14964, 15084, 18017, 22446, 24302, 36034, 36453, 44892, 48604, 54051, 72068, 72906, 108102, 109359, 145812, 162153, 216204, 218718, 324306, 437436, 522493, 648612, 1044986, 1567479, 2089972, 3134958, 4702437, 6269916, 9404874, 18809748]

約数ペア:

[(1, 18809748), (2, 9404874), (3, 6269916), (4, 4702437), (6, 3134958), (9, 2089972), (12, 1567479), (18, 1044986), (29, 648612), (36, 522493), (43, 437436), (58, 324306), (86, 218718), (87, 216204), (116, 162153), (129, 145812), (172, 109359), (174, 108102), (258, 72906), (261, 72068), (348, 54051), (387, 48604), (419, 44892), (516, 36453), (522, 36034), (774, 24302), (838, 22446), (1044, 18017), (1247, 15084), (1257, 14964), (1548, 12151), (1676, 11223), (2494, 7542), (2514, 7482), (3741, 5028), (3771, 4988)]