20385057

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16939743

約数列:

[1, 3, 7, 11, 17, 21, 29, 33, 51, 77, 87, 119, 179, 187, 203, 231, 319, 357, 493, 537, 561, 609, 957, 1253, 1309, 1479, 1969, 2233, 3043, 3451, 3759, 3927, 5191, 5423, 5907, 6699, 9129, 10353, 13783, 15573, 16269, 21301, 33473, 36337, 37961, 41349, 57101, 63903, 88247, 100419, 109011, 113883, 171303, 234311, 264741, 399707, 617729, 702933, 970717, 1199121, 1853187, 2912151, 6795019, 20385057]

約数ペア:

[(1, 20385057), (3, 6795019), (7, 2912151), (11, 1853187), (17, 1199121), (21, 970717), (29, 702933), (33, 617729), (51, 399707), (77, 264741), (87, 234311), (119, 171303), (179, 113883), (187, 109011), (203, 100419), (231, 88247), (319, 63903), (357, 57101), (493, 41349), (537, 37961), (561, 36337), (609, 33473), (957, 21301), (1253, 16269), (1309, 15573), (1479, 13783), (1969, 10353), (2233, 9129), (3043, 6699), (3451, 5907), (3759, 5423), (3927, 5191)]