20412280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72901}}^1$

素因数の和:72919

約数の個数: 32

約数和(自身を含む): 52489440

約数和(自身を除く): 32077160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72901, 145802, 291604, 364505, 510307, 583208, 729010, 1020614, 1458020, 2041228, 2551535, 2916040, 4082456, 5103070, 10206140, 20412280]

約数ペア:

[(1, 20412280), (2, 10206140), (4, 5103070), (5, 4082456), (7, 2916040), (8, 2551535), (10, 2041228), (14, 1458020), (20, 1020614), (28, 729010), (35, 583208), (40, 510307), (56, 364505), (70, 291604), (140, 145802), (280, 72901)]