19478620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139133}}^1$

素因数の和:139149

約数の個数: 24

約数和(自身を含む): 46749024

約数和(自身を除く): 27270404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 139133, 278266, 556532, 695665, 973931, 1391330, 1947862, 2782660, 3895724, 4869655, 9739310, 19478620]

約数ペア:

[(1, 19478620), (2, 9739310), (4, 4869655), (5, 3895724), (7, 2782660), (10, 1947862), (14, 1391330), (20, 973931), (28, 695665), (35, 556532), (70, 278266), (140, 139133)]