20966220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10589}}^1$

素因数の和:10615

約数の個数: 72

約数和(自身を含む): 69385680

約数和(自身を除く): 48419460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10589, 21178, 31767, 42356, 52945, 63534, 95301, 105890, 116479, 127068, 158835, 190602, 211780, 232958, 317670, 349437, 381204, 465916, 476505, 582395, 635340, 698874, 953010, 1048311, 1164790, 1397748, 1747185, 1906020, 2096622, 2329580, 3494370, 4193244, 5241555, 6988740, 10483110, 20966220]

約数ペア:

[(1, 20966220), (2, 10483110), (3, 6988740), (4, 5241555), (5, 4193244), (6, 3494370), (9, 2329580), (10, 2096622), (11, 1906020), (12, 1747185), (15, 1397748), (18, 1164790), (20, 1048311), (22, 953010), (30, 698874), (33, 635340), (36, 582395), (44, 476505), (45, 465916), (55, 381204), (60, 349437), (66, 317670), (90, 232958), (99, 211780), (110, 190602), (132, 158835), (165, 127068), (180, 116479), (198, 105890), (220, 95301), (330, 63534), (396, 52945), (495, 42356), (660, 31767), (990, 21178), (1980, 10589)]