20090420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{143503}}^1$

素因数の和:143519

約数の個数: 24

約数和(自身を含む): 48217344

約数和(自身を除く): 28126924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 143503, 287006, 574012, 717515, 1004521, 1435030, 2009042, 2870060, 4018084, 5022605, 10045210, 20090420]

約数ペア:

[(1, 20090420), (2, 10045210), (4, 5022605), (5, 4018084), (7, 2870060), (10, 2009042), (14, 1435030), (20, 1004521), (28, 717515), (35, 574012), (70, 287006), (140, 143503)]