18421218

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 41441400

約数和(自身を除く): 23020182

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 109, 123, 218, 229, 246, 327, 369, 458, 654, 687, 738, 981, 1374, 1962, 2061, 4122, 4469, 8938, 9389, 13407, 18778, 24961, 26814, 28167, 40221, 49922, 56334, 74883, 80442, 84501, 149766, 169002, 224649, 449298, 1023401, 2046802, 3070203, 6140406, 9210609, 18421218]

約数ペア:

[(1, 18421218), (2, 9210609), (3, 6140406), (6, 3070203), (9, 2046802), (18, 1023401), (41, 449298), (82, 224649), (109, 169002), (123, 149766), (218, 84501), (229, 80442), (246, 74883), (327, 56334), (369, 49922), (458, 40221), (654, 28167), (687, 26814), (738, 24961), (981, 18778), (1374, 13407), (1962, 9389), (2061, 8938), (4122, 4469)]