2019651880

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{256301}}^1$

素因数の和:256509

約数の個数: 32

約数和(自身を含む): 4567301640

約数和(自身を除く): 2547649760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 256301, 512602, 1025204, 1281505, 2050408, 2563010, 5126020, 10252040, 50491297, 100982594, 201965188, 252456485, 403930376, 504912970, 1009825940, 2019651880]

約数ペア:

[(1, 2019651880), (2, 1009825940), (4, 504912970), (5, 403930376), (8, 252456485), (10, 201965188), (20, 100982594), (40, 50491297), (197, 10252040), (394, 5126020), (788, 2563010), (985, 2050408), (1576, 1281505), (1970, 1025204), (3940, 512602), (7880, 256301)]