19759887

素因数分解:

$3^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:237

約数の個数: 48

約数和(自身を含む): 34382400

約数和(自身を除く): 14622513

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 111, 147, 173, 259, 333, 343, 441, 519, 777, 1029, 1211, 1557, 1813, 2331, 3087, 3633, 5439, 6401, 8477, 10899, 12691, 16317, 19203, 25431, 38073, 44807, 57609, 59339, 76293, 114219, 134421, 178017, 313649, 403263, 534051, 940947, 2195543, 2822841, 6586629, 19759887]

約数ペア:

[(1, 19759887), (3, 6586629), (7, 2822841), (9, 2195543), (21, 940947), (37, 534051), (49, 403263), (63, 313649), (111, 178017), (147, 134421), (173, 114219), (259, 76293), (333, 59339), (343, 57609), (441, 44807), (519, 38073), (777, 25431), (1029, 19203), (1211, 16317), (1557, 12691), (1813, 10899), (2331, 8477), (3087, 6401), (3633, 5439)]