20287456

素因数分解:

$2^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^2$

素因数の和:152

約数の個数: 72

約数和(自身を含む): 47776176

約数和(自身を除く): 27488720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 47, 56, 82, 94, 112, 164, 188, 224, 287, 328, 329, 376, 574, 656, 658, 752, 1148, 1312, 1316, 1504, 1927, 2209, 2296, 2632, 3854, 4418, 4592, 5264, 7708, 8836, 9184, 10528, 13489, 15416, 15463, 17672, 26978, 30832, 30926, 35344, 53956, 61664, 61852, 70688, 90569, 107912, 123704, 181138, 215824, 247408, 362276, 431648, 494816, 633983, 724552, 1267966, 1449104, 2535932, 2898208, 5071864, 10143728, 20287456]

約数ペア:

[(1, 20287456), (2, 10143728), (4, 5071864), (7, 2898208), (8, 2535932), (14, 1449104), (16, 1267966), (28, 724552), (32, 633983), (41, 494816), (47, 431648), (56, 362276), (82, 247408), (94, 215824), (112, 181138), (164, 123704), (188, 107912), (224, 90569), (287, 70688), (328, 61852), (329, 61664), (376, 53956), (574, 35344), (656, 30926), (658, 30832), (752, 26978), (1148, 17672), (1312, 15463), (1316, 15416), (1504, 13489), (1927, 10528), (2209, 9184), (2296, 8836), (2632, 7708), (3854, 5264), (4418, 4592)]