20866616

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2161}}^1$

素因数の和:2255

約数の個数: 32

約数和(自身を含む): 42029280

約数和(自身を除く): 21162664

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 284, 568, 1207, 2161, 2414, 4322, 4828, 8644, 9656, 17288, 36737, 73474, 146948, 153431, 293896, 306862, 613724, 1227448, 2608327, 5216654, 10433308, 20866616]

約数ペア:

[(1, 20866616), (2, 10433308), (4, 5216654), (8, 2608327), (17, 1227448), (34, 613724), (68, 306862), (71, 293896), (136, 153431), (142, 146948), (284, 73474), (568, 36737), (1207, 17288), (2161, 9656), (2414, 8644), (4322, 4828)]