20209560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{491}}^1$

素因数の和:526

約数の個数: 128

約数和(自身を含む): 70848000

約数和(自身を除く): 50638440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 343, 392, 420, 490, 491, 588, 686, 735, 840, 980, 982, 1029, 1176, 1372, 1470, 1473, 1715, 1960, 1964, 2058, 2455, 2744, 2940, 2946, 3430, 3437, 3928, 4116, 4910, 5145, 5880, 5892, 6860, 6874, 7365, 8232, 9820, 10290, 10311, 11784, 13720, 13748, 14730, 17185, 19640, 20580, 20622, 24059, 27496, 29460, 34370, 41160, 41244, 48118, 51555, 58920, 68740, 72177, 82488, 96236, 103110, 120295, 137480, 144354, 168413, 192472, 206220, 240590, 288708, 336826, 360885, 412440, 481180, 505239, 577416, 673652, 721770, 842065, 962360, 1010478, 1347304, 1443540, 1684130, 2020956, 2526195, 2887080, 3368260, 4041912, 5052390, 6736520, 10104780, 20209560]

約数ペア:

[(1, 20209560), (2, 10104780), (3, 6736520), (4, 5052390), (5, 4041912), (6, 3368260), (7, 2887080), (8, 2526195), (10, 2020956), (12, 1684130), (14, 1443540), (15, 1347304), (20, 1010478), (21, 962360), (24, 842065), (28, 721770), (30, 673652), (35, 577416), (40, 505239), (42, 481180), (49, 412440), (56, 360885), (60, 336826), (70, 288708), (84, 240590), (98, 206220), (105, 192472), (120, 168413), (140, 144354), (147, 137480), (168, 120295), (196, 103110), (210, 96236), (245, 82488), (280, 72177), (294, 68740), (343, 58920), (392, 51555), (420, 48118), (490, 41244), (491, 41160), (588, 34370), (686, 29460), (735, 27496), (840, 24059), (980, 20622), (982, 20580), (1029, 19640), (1176, 17185), (1372, 14730), (1470, 13748), (1473, 13720), (1715, 11784), (1960, 10311), (1964, 10290), (2058, 9820), (2455, 8232), (2744, 7365), (2940, 6874), (2946, 6860), (3430, 5892), (3437, 5880), (3928, 5145), (4116, 4910)]