21283712

素因数分解:

$2^7\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:918

約数の個数: 32

約数和(自身を含む): 42631920

約数和(自身を除く): 21348208

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 257, 514, 647, 1028, 1294, 2056, 2588, 4112, 5176, 8224, 10352, 16448, 20704, 32896, 41408, 82816, 166279, 332558, 665116, 1330232, 2660464, 5320928, 10641856, 21283712]

約数ペア:

[(1, 21283712), (2, 10641856), (4, 5320928), (8, 2660464), (16, 1330232), (32, 665116), (64, 332558), (128, 166279), (257, 82816), (514, 41408), (647, 32896), (1028, 20704), (1294, 16448), (2056, 10352), (2588, 8224), (4112, 5176)]