20978432

素因数分解:

$2^8\times {\mathrm{19}}^2\times {\mathrm{227}}^1$

素因数の和:281

約数の個数: 54

約数和(自身を含む): 44389548

約数和(自身を除く): 23411116

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 227, 256, 304, 361, 454, 608, 722, 908, 1216, 1444, 1816, 2432, 2888, 3632, 4313, 4864, 5776, 7264, 8626, 11552, 14528, 17252, 23104, 29056, 34504, 46208, 58112, 69008, 81947, 92416, 138016, 163894, 276032, 327788, 552064, 655576, 1104128, 1311152, 2622304, 5244608, 10489216, 20978432]

約数ペア:

[(1, 20978432), (2, 10489216), (4, 5244608), (8, 2622304), (16, 1311152), (19, 1104128), (32, 655576), (38, 552064), (64, 327788), (76, 276032), (128, 163894), (152, 138016), (227, 92416), (256, 81947), (304, 69008), (361, 58112), (454, 46208), (608, 34504), (722, 29056), (908, 23104), (1216, 17252), (1444, 14528), (1816, 11552), (2432, 8626), (2888, 7264), (3632, 5776), (4313, 4864)]