18908667

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:129

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 13347333

約数列:

[1, 3, 9, 19, 27, 29, 31, 41, 57, 87, 93, 123, 171, 261, 279, 369, 513, 551, 589, 779, 783, 837, 899, 1107, 1189, 1271, 1653, 1767, 2337, 2697, 3567, 3813, 4959, 5301, 7011, 8091, 10701, 11439, 14877, 15903, 17081, 21033, 22591, 24149, 24273, 32103, 34317, 36859, 51243, 67773, 72447, 110577, 153729, 203319, 217341, 331731, 461187, 609957, 652023, 700321, 995193, 2100963, 6302889, 18908667]

約数ペア:

[(1, 18908667), (3, 6302889), (9, 2100963), (19, 995193), (27, 700321), (29, 652023), (31, 609957), (41, 461187), (57, 331731), (87, 217341), (93, 203319), (123, 153729), (171, 110577), (261, 72447), (279, 67773), (369, 51243), (513, 36859), (551, 34317), (589, 32103), (779, 24273), (783, 24149), (837, 22591), (899, 21033), (1107, 17081), (1189, 15903), (1271, 14877), (1653, 11439), (1767, 10701), (2337, 8091), (2697, 7011), (3567, 5301), (3813, 4959)]