21069580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150497}}^1$

素因数の和:150513

約数の個数: 24

約数和(自身を含む): 50567328

約数和(自身を除く): 29497748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150497, 300994, 601988, 752485, 1053479, 1504970, 2106958, 3009940, 4213916, 5267395, 10534790, 21069580]

約数ペア:

[(1, 21069580), (2, 10534790), (4, 5267395), (5, 4213916), (7, 3009940), (10, 2106958), (14, 1504970), (20, 1053479), (28, 752485), (35, 601988), (70, 300994), (140, 150497)]