20813380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148667}}^1$

素因数の和:148683

約数の個数: 24

約数和(自身を含む): 49952448

約数和(自身を除く): 29139068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148667, 297334, 594668, 743335, 1040669, 1486670, 2081338, 2973340, 4162676, 5203345, 10406690, 20813380]

約数ペア:

[(1, 20813380), (2, 10406690), (4, 5203345), (5, 4162676), (7, 2973340), (10, 2081338), (14, 1486670), (20, 1040669), (28, 743335), (35, 594668), (70, 297334), (140, 148667)]