2781080

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{277}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 6305040

約数和(自身を除く): 3523960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 277, 502, 554, 1004, 1108, 1255, 1385, 2008, 2216, 2510, 2770, 5020, 5540, 10040, 11080, 69527, 139054, 278108, 347635, 556216, 695270, 1390540, 2781080]

約数ペア:

[(1, 2781080), (2, 1390540), (4, 695270), (5, 556216), (8, 347635), (10, 278108), (20, 139054), (40, 69527), (251, 11080), (277, 10040), (502, 5540), (554, 5020), (1004, 2770), (1108, 2510), (1255, 2216), (1385, 2008)]