20987260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149909}}^1$

素因数の和:149925

約数の個数: 24

約数和(自身を含む): 50369760

約数和(自身を除く): 29382500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149909, 299818, 599636, 749545, 1049363, 1499090, 2098726, 2998180, 4197452, 5246815, 10493630, 20987260]

約数ペア:

[(1, 20987260), (2, 10493630), (4, 5246815), (5, 4197452), (7, 2998180), (10, 2098726), (14, 1499090), (20, 1049363), (28, 749545), (35, 599636), (70, 299818), (140, 149909)]