12820280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29137}}^1$

素因数の和:29159

約数の個数: 32

約数和(自身を含む): 31469040

約数和(自身を除く): 18648760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 29137, 58274, 116548, 145685, 233096, 291370, 320507, 582740, 641014, 1165480, 1282028, 1602535, 2564056, 3205070, 6410140, 12820280]

約数ペア:

[(1, 12820280), (2, 6410140), (4, 3205070), (5, 2564056), (8, 1602535), (10, 1282028), (11, 1165480), (20, 641014), (22, 582740), (40, 320507), (44, 291370), (55, 233096), (88, 145685), (110, 116548), (220, 58274), (440, 29137)]