20322580

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7417}}^1$

素因数の和:7563

約数の個数: 24

約数和(自身を含む): 42994728

約数和(自身を除く): 22672148

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7417, 14834, 29668, 37085, 74170, 148340, 1016129, 2032258, 4064516, 5080645, 10161290, 20322580]

約数ペア:

[(1, 20322580), (2, 10161290), (4, 5080645), (5, 4064516), (10, 2032258), (20, 1016129), (137, 148340), (274, 74170), (548, 37085), (685, 29668), (1370, 14834), (2740, 7417)]