31281460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223439}}^1$

素因数の和:223455

約数の個数: 24

約数和(自身を含む): 75075840

約数和(自身を除く): 43794380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223439, 446878, 893756, 1117195, 1564073, 2234390, 3128146, 4468780, 6256292, 7820365, 15640730, 31281460]

約数ペア:

[(1, 31281460), (2, 15640730), (4, 7820365), (5, 6256292), (7, 4468780), (10, 3128146), (14, 2234390), (20, 1564073), (28, 1117195), (35, 893756), (70, 446878), (140, 223439)]