20985020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149893}}^1$

素因数の和:149909

約数の個数: 24

約数和(自身を含む): 50364384

約数和(自身を除く): 29379364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149893, 299786, 599572, 749465, 1049251, 1498930, 2098502, 2997860, 4197004, 5246255, 10492510, 20985020]

約数ペア:

[(1, 20985020), (2, 10492510), (4, 5246255), (5, 4197004), (7, 2997860), (10, 2098502), (14, 1498930), (20, 1049251), (28, 749465), (35, 599572), (70, 299786), (140, 149893)]