21736863

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:149

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 15587937

約数列:

[1, 3, 9, 17, 23, 27, 29, 51, 69, 71, 87, 153, 207, 213, 261, 391, 459, 493, 621, 639, 667, 783, 1173, 1207, 1479, 1633, 1917, 2001, 2059, 3519, 3621, 4437, 4899, 6003, 6177, 10557, 10863, 11339, 13311, 14697, 18009, 18531, 27761, 32589, 34017, 35003, 44091, 47357, 55593, 83283, 102051, 105009, 142071, 249849, 306153, 315027, 426213, 749547, 805069, 945081, 1278639, 2415207, 7245621, 21736863]

約数ペア:

[(1, 21736863), (3, 7245621), (9, 2415207), (17, 1278639), (23, 945081), (27, 805069), (29, 749547), (51, 426213), (69, 315027), (71, 306153), (87, 249849), (153, 142071), (207, 105009), (213, 102051), (261, 83283), (391, 55593), (459, 47357), (493, 44091), (621, 35003), (639, 34017), (667, 32589), (783, 27761), (1173, 18531), (1207, 18009), (1479, 14697), (1633, 13311), (1917, 11339), (2001, 10863), (2059, 10557), (3519, 6177), (3621, 6003), (4437, 4899)]