21190712

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{20857}}^1$

素因数の和:20990

約数の個数: 16

約数和(自身を含む): 40047360

約数和(自身を除く): 18856648

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 20857, 41714, 83428, 166856, 2648839, 5297678, 10595356, 21190712]

約数ペア:

[(1, 21190712), (2, 10595356), (4, 5297678), (8, 2648839), (127, 166856), (254, 83428), (508, 41714), (1016, 20857)]