20772760

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2069}}^1$

素因数の和:2331

約数の個数: 32

約数和(自身を含む): 46947600

約数和(自身を除く): 26174840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2069, 2510, 4138, 5020, 8276, 10040, 10345, 16552, 20690, 41380, 82760, 519319, 1038638, 2077276, 2596595, 4154552, 5193190, 10386380, 20772760]

約数ペア:

[(1, 20772760), (2, 10386380), (4, 5193190), (5, 4154552), (8, 2596595), (10, 2077276), (20, 1038638), (40, 519319), (251, 82760), (502, 41380), (1004, 20690), (1255, 16552), (2008, 10345), (2069, 10040), (2510, 8276), (4138, 5020)]