21876688

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80429}}^1$

素因数の和:80454

約数の個数: 20

約数和(自身を含む): 44879940

約数和(自身を除く): 23003252

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80429, 160858, 321716, 643432, 1286864, 1367293, 2734586, 5469172, 10938344, 21876688]

約数ペア:

[(1, 21876688), (2, 10938344), (4, 5469172), (8, 2734586), (16, 1367293), (17, 1286864), (34, 643432), (68, 321716), (136, 160858), (272, 80429)]