20397664

素因数分解:

$2^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2221}}^1$

素因数の和:2279

約数の個数: 48

約数和(自身を含む): 47035296

約数和(自身を除く): 26637632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 82, 112, 164, 224, 287, 328, 574, 656, 1148, 1312, 2221, 2296, 4442, 4592, 8884, 9184, 15547, 17768, 31094, 35536, 62188, 71072, 91061, 124376, 182122, 248752, 364244, 497504, 637427, 728488, 1274854, 1456976, 2549708, 2913952, 5099416, 10198832, 20397664]

約数ペア:

[(1, 20397664), (2, 10198832), (4, 5099416), (7, 2913952), (8, 2549708), (14, 1456976), (16, 1274854), (28, 728488), (32, 637427), (41, 497504), (56, 364244), (82, 248752), (112, 182122), (164, 124376), (224, 91061), (287, 71072), (328, 62188), (574, 35536), (656, 31094), (1148, 17768), (1312, 15547), (2221, 9184), (2296, 8884), (4442, 4592)]