20157291

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 40435200

約数和(自身を除く): 20277909

約数列:

[1, 3, 7, 9, 11, 17, 21, 29, 33, 51, 59, 63, 77, 87, 99, 119, 153, 177, 187, 203, 231, 261, 319, 357, 413, 493, 531, 561, 609, 649, 693, 957, 1003, 1071, 1239, 1309, 1479, 1683, 1711, 1827, 1947, 2233, 2871, 3009, 3451, 3717, 3927, 4437, 4543, 5133, 5423, 5841, 6699, 7021, 9027, 10353, 11033, 11781, 11977, 13629, 15399, 16269, 18821, 20097, 21063, 29087, 31059, 33099, 35931, 37961, 40887, 48807, 56463, 63189, 77231, 87261, 99297, 107793, 113883, 131747, 169389, 203609, 231693, 261783, 319957, 341649, 395241, 610827, 695079, 959871, 1185723, 1832481, 2239699, 2879613, 6719097, 20157291]

約数ペア:

[(1, 20157291), (3, 6719097), (7, 2879613), (9, 2239699), (11, 1832481), (17, 1185723), (21, 959871), (29, 695079), (33, 610827), (51, 395241), (59, 341649), (63, 319957), (77, 261783), (87, 231693), (99, 203609), (119, 169389), (153, 131747), (177, 113883), (187, 107793), (203, 99297), (231, 87261), (261, 77231), (319, 63189), (357, 56463), (413, 48807), (493, 40887), (531, 37961), (561, 35931), (609, 33099), (649, 31059), (693, 29087), (957, 21063), (1003, 20097), (1071, 18821), (1239, 16269), (1309, 15399), (1479, 13629), (1683, 11977), (1711, 11781), (1827, 11033), (1947, 10353), (2233, 9027), (2871, 7021), (3009, 6699), (3451, 5841), (3717, 5423), (3927, 5133), (4437, 4543)]