21138488

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19867}}^1$

素因数の和:19899

約数の個数: 32

約数和(自身を含む): 47683200

約数和(自身を除く): 26544712

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19867, 39734, 79468, 139069, 158936, 278138, 377473, 556276, 754946, 1112552, 1509892, 2642311, 3019784, 5284622, 10569244, 21138488]

約数ペア:

[(1, 21138488), (2, 10569244), (4, 5284622), (7, 3019784), (8, 2642311), (14, 1509892), (19, 1112552), (28, 754946), (38, 556276), (56, 377473), (76, 278138), (133, 158936), (152, 139069), (266, 79468), (532, 39734), (1064, 19867)]