21864880

素因数分解:

$2^4\times 5^1\times {\mathrm{273311}}^1$

素因数の和:273324

約数の個数: 20

約数和(自身を含む): 50836032

約数和(自身を除く): 28971152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273311, 546622, 1093244, 1366555, 2186488, 2733110, 4372976, 5466220, 10932440, 21864880]

約数ペア:

[(1, 21864880), (2, 10932440), (4, 5466220), (5, 4372976), (8, 2733110), (10, 2186488), (16, 1366555), (20, 1093244), (40, 546622), (80, 273311)]