20426420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145903}}^1$

素因数の和:145919

約数の個数: 24

約数和(自身を含む): 49023744

約数和(自身を除く): 28597324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145903, 291806, 583612, 729515, 1021321, 1459030, 2042642, 2918060, 4085284, 5106605, 10213210, 20426420]

約数ペア:

[(1, 20426420), (2, 10213210), (4, 5106605), (5, 4085284), (7, 2918060), (10, 2042642), (14, 1459030), (20, 1021321), (28, 729515), (35, 583612), (70, 291806), (140, 145903)]