25216840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{257}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 62415360

約数和(自身を除く): 37198520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 223, 257, 440, 446, 514, 892, 1028, 1115, 1285, 1784, 2056, 2230, 2453, 2570, 2827, 4460, 4906, 5140, 5654, 8920, 9812, 10280, 11308, 12265, 14135, 19624, 22616, 24530, 28270, 49060, 56540, 57311, 98120, 113080, 114622, 229244, 286555, 458488, 573110, 630421, 1146220, 1260842, 2292440, 2521684, 3152105, 5043368, 6304210, 12608420, 25216840]

約数ペア:

[(1, 25216840), (2, 12608420), (4, 6304210), (5, 5043368), (8, 3152105), (10, 2521684), (11, 2292440), (20, 1260842), (22, 1146220), (40, 630421), (44, 573110), (55, 458488), (88, 286555), (110, 229244), (220, 114622), (223, 113080), (257, 98120), (440, 57311), (446, 56540), (514, 49060), (892, 28270), (1028, 24530), (1115, 22616), (1285, 19624), (1784, 14135), (2056, 12265), (2230, 11308), (2453, 10280), (2570, 9812), (2827, 8920), (4460, 5654), (4906, 5140)]