280420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2003}}^1$

素因数の和:2019

約数の個数: 24

約数和(自身を含む): 673344

約数和(自身を除く): 392924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2003, 4006, 8012, 10015, 14021, 20030, 28042, 40060, 56084, 70105, 140210, 280420]

約数ペア:

[(1, 280420), (2, 140210), (4, 70105), (5, 56084), (7, 40060), (10, 28042), (14, 20030), (20, 14021), (28, 10015), (35, 8012), (70, 4006), (140, 2003)]