19460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1$

素因数の和:155

約数の個数: 24

約数和(自身を含む): 47040

約数和(自身を除く): 27580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 19460]

約数ペア:

[(1, 19460), (2, 9730), (4, 4865), (5, 3892), (7, 2780), (10, 1946), (14, 1390), (20, 973), (28, 695), (35, 556), (70, 278), (139, 140)]