21145872

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1381}}^1$

素因数の和:1432

約数の個数: 80

約数和(自身を含む): 61692480

約数和(自身を除く): 40546608

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 29, 33, 44, 48, 58, 66, 87, 88, 116, 132, 174, 176, 232, 264, 319, 348, 464, 528, 638, 696, 957, 1276, 1381, 1392, 1914, 2552, 2762, 3828, 4143, 5104, 5524, 7656, 8286, 11048, 15191, 15312, 16572, 22096, 30382, 33144, 40049, 45573, 60764, 66288, 80098, 91146, 120147, 121528, 160196, 182292, 240294, 243056, 320392, 364584, 440539, 480588, 640784, 729168, 881078, 961176, 1321617, 1762156, 1922352, 2643234, 3524312, 5286468, 7048624, 10572936, 21145872]

約数ペア:

[(1, 21145872), (2, 10572936), (3, 7048624), (4, 5286468), (6, 3524312), (8, 2643234), (11, 1922352), (12, 1762156), (16, 1321617), (22, 961176), (24, 881078), (29, 729168), (33, 640784), (44, 480588), (48, 440539), (58, 364584), (66, 320392), (87, 243056), (88, 240294), (116, 182292), (132, 160196), (174, 121528), (176, 120147), (232, 91146), (264, 80098), (319, 66288), (348, 60764), (464, 45573), (528, 40049), (638, 33144), (696, 30382), (957, 22096), (1276, 16572), (1381, 15312), (1392, 15191), (1914, 11048), (2552, 8286), (2762, 7656), (3828, 5524), (4143, 5104)]