198561080

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{19777}}^1$

素因数の和:20039

約数の個数: 32

約数和(自身を含む): 448565040

約数和(自身を除く): 250003960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 19777, 39554, 79108, 98885, 158216, 197770, 395540, 791080, 4964027, 9928054, 19856108, 24820135, 39712216, 49640270, 99280540, 198561080]

約数ペア:

[(1, 198561080), (2, 99280540), (4, 49640270), (5, 39712216), (8, 24820135), (10, 19856108), (20, 9928054), (40, 4964027), (251, 791080), (502, 395540), (1004, 197770), (1255, 158216), (2008, 98885), (2510, 79108), (5020, 39554), (10040, 19777)]