20321568

素因数分解:

$2^5\times 3^2\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1778

約数の個数: 72

約数和(自身を含む): 59233356

約数和(自身を除く): 38911788

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 41, 48, 72, 82, 96, 123, 144, 164, 246, 288, 328, 369, 492, 656, 738, 984, 1312, 1476, 1721, 1968, 2952, 3442, 3936, 5163, 5904, 6884, 10326, 11808, 13768, 15489, 20652, 27536, 30978, 41304, 55072, 61956, 70561, 82608, 123912, 141122, 165216, 211683, 247824, 282244, 423366, 495648, 564488, 635049, 846732, 1128976, 1270098, 1693464, 2257952, 2540196, 3386928, 5080392, 6773856, 10160784, 20321568]

約数ペア:

[(1, 20321568), (2, 10160784), (3, 6773856), (4, 5080392), (6, 3386928), (8, 2540196), (9, 2257952), (12, 1693464), (16, 1270098), (18, 1128976), (24, 846732), (32, 635049), (36, 564488), (41, 495648), (48, 423366), (72, 282244), (82, 247824), (96, 211683), (123, 165216), (144, 141122), (164, 123912), (246, 82608), (288, 70561), (328, 61956), (369, 55072), (492, 41304), (656, 30978), (738, 27536), (984, 20652), (1312, 15489), (1476, 13768), (1721, 11808), (1968, 10326), (2952, 6884), (3442, 5904), (3936, 5163)]