817207880

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{187433}}^1$

素因数の和:187553

約数の個数: 32

約数和(自身を含む): 1855596600

約数和(自身を除く): 1038388720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 187433, 374866, 749732, 937165, 1499464, 1874330, 3748660, 7497320, 20430197, 40860394, 81720788, 102150985, 163441576, 204301970, 408603940, 817207880]

約数ペア:

[(1, 817207880), (2, 408603940), (4, 204301970), (5, 163441576), (8, 102150985), (10, 81720788), (20, 40860394), (40, 20430197), (109, 7497320), (218, 3748660), (436, 1874330), (545, 1499464), (872, 937165), (1090, 749732), (2180, 374866), (4360, 187433)]