21499712

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{25841}}^1$

素因数の和:25866

約数の個数: 28

約数和(自身を含む): 45947076

約数和(自身を除く): 24447364

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 208, 416, 832, 25841, 51682, 103364, 206728, 335933, 413456, 671866, 826912, 1343732, 1653824, 2687464, 5374928, 10749856, 21499712]

約数ペア:

[(1, 21499712), (2, 10749856), (4, 5374928), (8, 2687464), (13, 1653824), (16, 1343732), (26, 826912), (32, 671866), (52, 413456), (64, 335933), (104, 206728), (208, 103364), (416, 51682), (832, 25841)]