16857040

素因数分解:

$2^4\times 5^1\times {\mathrm{210713}}^1$

素因数の和:210726

約数の個数: 20

約数和(自身を含む): 39192804

約数和(自身を除く): 22335764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210713, 421426, 842852, 1053565, 1685704, 2107130, 3371408, 4214260, 8428520, 16857040]

約数ペア:

[(1, 16857040), (2, 8428520), (4, 4214260), (5, 3371408), (8, 2107130), (10, 1685704), (16, 1053565), (20, 842852), (40, 421426), (80, 210713)]