20681290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{673}}^1$

素因数の和:1126

約数の個数: 32

約数和(自身を含む): 42704640

約数和(自身を除く): 22023350

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 439, 673, 878, 1346, 2195, 3073, 3365, 4390, 4711, 6146, 6730, 9422, 15365, 23555, 30730, 47110, 295447, 590894, 1477235, 2068129, 2954470, 4136258, 10340645, 20681290]

約数ペア:

[(1, 20681290), (2, 10340645), (5, 4136258), (7, 2954470), (10, 2068129), (14, 1477235), (35, 590894), (70, 295447), (439, 47110), (673, 30730), (878, 23555), (1346, 15365), (2195, 9422), (3073, 6730), (3365, 6146), (4390, 4711)]