78459730

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{443}}^1$

素因数の和:738

約数の個数: 32

約数和(自身を含む): 143856000

約数和(自身を除く): 65396270

約数列:

[1, 2, 5, 10, 89, 178, 199, 398, 443, 445, 886, 890, 995, 1990, 2215, 4430, 17711, 35422, 39427, 78854, 88157, 88555, 176314, 177110, 197135, 394270, 440785, 881570, 7845973, 15691946, 39229865, 78459730]

約数ペア:

[(1, 78459730), (2, 39229865), (5, 15691946), (10, 7845973), (89, 881570), (178, 440785), (199, 394270), (398, 197135), (443, 177110), (445, 176314), (886, 88555), (890, 88157), (995, 78854), (1990, 39427), (2215, 35422), (4430, 17711)]