21081004

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 43803648

約数和(自身を除く): 22722644

約数列:

[1, 2, 4, 7, 14, 28, 47, 83, 94, 166, 188, 193, 329, 332, 386, 581, 658, 772, 1162, 1316, 1351, 2324, 2702, 3901, 5404, 7802, 9071, 15604, 16019, 18142, 27307, 32038, 36284, 54614, 63497, 64076, 109228, 112133, 126994, 224266, 253988, 448532, 752893, 1505786, 3011572, 5270251, 10540502, 21081004]

約数ペア:

[(1, 21081004), (2, 10540502), (4, 5270251), (7, 3011572), (14, 1505786), (28, 752893), (47, 448532), (83, 253988), (94, 224266), (166, 126994), (188, 112133), (193, 109228), (329, 64076), (332, 63497), (386, 54614), (581, 36284), (658, 32038), (772, 27307), (1162, 18142), (1316, 16019), (1351, 15604), (2324, 9071), (2702, 7802), (3901, 5404)]