21251536

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13693}}^1$

素因数の和:13798

約数の個数: 20

約数和(自身を含む): 41602372

約数和(自身を除く): 20350836

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13693, 27386, 54772, 109544, 219088, 1328221, 2656442, 5312884, 10625768, 21251536]

約数ペア:

[(1, 21251536), (2, 10625768), (4, 5312884), (8, 2656442), (16, 1328221), (97, 219088), (194, 109544), (388, 54772), (776, 27386), (1552, 13693)]