18901708

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 39481344

約数和(自身を除く): 20579636

約数列:

[1, 2, 4, 7, 14, 28, 47, 53, 94, 106, 188, 212, 271, 329, 371, 542, 658, 742, 1084, 1316, 1484, 1897, 2491, 3794, 4982, 7588, 9964, 12737, 14363, 17437, 25474, 28726, 34874, 50948, 57452, 69748, 89159, 100541, 178318, 201082, 356636, 402164, 675061, 1350122, 2700244, 4725427, 9450854, 18901708]

約数ペア:

[(1, 18901708), (2, 9450854), (4, 4725427), (7, 2700244), (14, 1350122), (28, 675061), (47, 402164), (53, 356636), (94, 201082), (106, 178318), (188, 100541), (212, 89159), (271, 69748), (329, 57452), (371, 50948), (542, 34874), (658, 28726), (742, 25474), (1084, 17437), (1316, 14363), (1484, 12737), (1897, 9964), (2491, 7588), (3794, 4982)]