20401416

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 128

約数和(自身を含む): 65894400

約数和(自身を除く): 45492984

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 103, 108, 126, 131, 168, 189, 206, 216, 252, 262, 309, 378, 393, 412, 504, 524, 618, 721, 756, 786, 824, 917, 927, 1048, 1179, 1236, 1442, 1512, 1572, 1834, 1854, 2163, 2358, 2472, 2751, 2781, 2884, 3144, 3537, 3668, 3708, 4326, 4716, 5502, 5562, 5768, 6489, 7074, 7336, 7416, 8253, 8652, 9432, 11004, 11124, 12978, 13493, 14148, 16506, 17304, 19467, 22008, 22248, 24759, 25956, 26986, 28296, 33012, 38934, 40479, 49518, 51912, 53972, 66024, 77868, 80958, 94451, 99036, 107944, 121437, 155736, 161916, 188902, 198072, 242874, 283353, 323832, 364311, 377804, 485748, 566706, 728622, 755608, 850059, 971496, 1133412, 1457244, 1700118, 2266824, 2550177, 2914488, 3400236, 5100354, 6800472, 10200708, 20401416]

約数ペア:

[(1, 20401416), (2, 10200708), (3, 6800472), (4, 5100354), (6, 3400236), (7, 2914488), (8, 2550177), (9, 2266824), (12, 1700118), (14, 1457244), (18, 1133412), (21, 971496), (24, 850059), (27, 755608), (28, 728622), (36, 566706), (42, 485748), (54, 377804), (56, 364311), (63, 323832), (72, 283353), (84, 242874), (103, 198072), (108, 188902), (126, 161916), (131, 155736), (168, 121437), (189, 107944), (206, 99036), (216, 94451), (252, 80958), (262, 77868), (309, 66024), (378, 53972), (393, 51912), (412, 49518), (504, 40479), (524, 38934), (618, 33012), (721, 28296), (756, 26986), (786, 25956), (824, 24759), (917, 22248), (927, 22008), (1048, 19467), (1179, 17304), (1236, 16506), (1442, 14148), (1512, 13493), (1572, 12978), (1834, 11124), (1854, 11004), (2163, 9432), (2358, 8652), (2472, 8253), (2751, 7416), (2781, 7336), (2884, 7074), (3144, 6489), (3537, 5768), (3668, 5562), (3708, 5502), (4326, 4716)]