20696520208

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{73651}}^1$

素因数の和:73872

約数の個数: 80

約数和(自身を含む): 49609630336

約数和(自身を除く): 28913110128

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 193, 208, 364, 386, 728, 772, 1351, 1456, 1544, 2509, 2702, 3088, 5018, 5404, 10036, 10808, 17563, 20072, 21616, 35126, 40144, 70252, 73651, 140504, 147302, 281008, 294604, 515557, 589208, 957463, 1031114, 1178416, 1914926, 2062228, 3829852, 4124456, 6702241, 7659704, 8248912, 13404482, 14214643, 15319408, 26808964, 28429286, 53617928, 56858572, 99502501, 107235856, 113717144, 184790359, 199005002, 227434288, 369580718, 398010004, 739161436, 796020008, 1293532513, 1478322872, 1592040016, 2587065026, 2956645744, 5174130052, 10348260104, 20696520208]

約数ペア:

[(1, 20696520208), (2, 10348260104), (4, 5174130052), (7, 2956645744), (8, 2587065026), (13, 1592040016), (14, 1478322872), (16, 1293532513), (26, 796020008), (28, 739161436), (52, 398010004), (56, 369580718), (91, 227434288), (104, 199005002), (112, 184790359), (182, 113717144), (193, 107235856), (208, 99502501), (364, 56858572), (386, 53617928), (728, 28429286), (772, 26808964), (1351, 15319408), (1456, 14214643), (1544, 13404482), (2509, 8248912), (2702, 7659704), (3088, 6702241), (5018, 4124456), (5404, 3829852), (10036, 2062228), (10808, 1914926), (17563, 1178416), (20072, 1031114), (21616, 957463), (35126, 589208), (40144, 515557), (70252, 294604), (73651, 281008), (140504, 147302)]