20178441416

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{347}}^1\times {\mathrm{12511}}^1$

素因数の和:12954

約数の個数: 64

約数和(自身を含む): 43890094080

約数和(自身を除く): 23711652664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 347, 581, 664, 694, 1162, 1388, 2324, 2429, 2776, 4648, 4858, 9716, 12511, 19432, 25022, 28801, 50044, 57602, 87577, 100088, 115204, 175154, 201607, 230408, 350308, 403214, 700616, 806428, 1038413, 1612856, 2076826, 4153652, 4341317, 7268891, 8307304, 8682634, 14537782, 17365268, 29075564, 30389219, 34730536, 58151128, 60778438, 121556876, 243113752, 360329311, 720658622, 1441317244, 2522305177, 2882634488, 5044610354, 10089220708, 20178441416]

約数ペア:

[(1, 20178441416), (2, 10089220708), (4, 5044610354), (7, 2882634488), (8, 2522305177), (14, 1441317244), (28, 720658622), (56, 360329311), (83, 243113752), (166, 121556876), (332, 60778438), (347, 58151128), (581, 34730536), (664, 30389219), (694, 29075564), (1162, 17365268), (1388, 14537782), (2324, 8682634), (2429, 8307304), (2776, 7268891), (4648, 4341317), (4858, 4153652), (9716, 2076826), (12511, 1612856), (19432, 1038413), (25022, 806428), (28801, 700616), (50044, 403214), (57602, 350308), (87577, 230408), (100088, 201607), (115204, 175154)]