81171540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4649}}^1$

素因数の和:4761

約数の個数: 72

約数和(自身を含む): 248812200

約数和(自身を除く): 167640660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1164, 1455, 1746, 1940, 2910, 3492, 4365, 4649, 5820, 8730, 9298, 13947, 17460, 18596, 23245, 27894, 41841, 46490, 55788, 69735, 83682, 92980, 139470, 167364, 209205, 278940, 418410, 450953, 836820, 901906, 1352859, 1803812, 2254765, 2705718, 4058577, 4509530, 5411436, 6764295, 8117154, 9019060, 13528590, 16234308, 20292885, 27057180, 40585770, 81171540]

約数ペア:

[(1, 81171540), (2, 40585770), (3, 27057180), (4, 20292885), (5, 16234308), (6, 13528590), (9, 9019060), (10, 8117154), (12, 6764295), (15, 5411436), (18, 4509530), (20, 4058577), (30, 2705718), (36, 2254765), (45, 1803812), (60, 1352859), (90, 901906), (97, 836820), (180, 450953), (194, 418410), (291, 278940), (388, 209205), (485, 167364), (582, 139470), (873, 92980), (970, 83682), (1164, 69735), (1455, 55788), (1746, 46490), (1940, 41841), (2910, 27894), (3492, 23245), (4365, 18596), (4649, 17460), (5820, 13947), (8730, 9298)]