20564488

素因数分解:

$2^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2339}}^1$

素因数の和:2509

約数の個数: 32

約数和(自身を含む): 44366400

約数和(自身を除く): 23801912

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 157, 314, 628, 1099, 1256, 2198, 2339, 4396, 4678, 8792, 9356, 16373, 18712, 32746, 65492, 130984, 367223, 734446, 1468892, 2570561, 2937784, 5141122, 10282244, 20564488]

約数ペア:

[(1, 20564488), (2, 10282244), (4, 5141122), (7, 2937784), (8, 2570561), (14, 1468892), (28, 734446), (56, 367223), (157, 130984), (314, 65492), (628, 32746), (1099, 18712), (1256, 16373), (2198, 9356), (2339, 8792), (4396, 4678)]