20288710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{653}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 39553920

約数和(自身を除く): 19265210

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 239, 478, 653, 1195, 1306, 2390, 3107, 3265, 6214, 6530, 8489, 15535, 16978, 31070, 42445, 84890, 156067, 312134, 780335, 1560670, 2028871, 4057742, 10144355, 20288710]

約数ペア:

[(1, 20288710), (2, 10144355), (5, 4057742), (10, 2028871), (13, 1560670), (26, 780335), (65, 312134), (130, 156067), (239, 84890), (478, 42445), (653, 31070), (1195, 16978), (1306, 15535), (2390, 8489), (3107, 6530), (3265, 6214)]