20487710

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1\times {\mathrm{317}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 38740032

約数和(自身を除く): 18252322

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 281, 317, 562, 634, 1405, 1585, 2810, 3170, 6463, 7291, 12926, 14582, 32315, 36455, 64630, 72910, 89077, 178154, 445385, 890770, 2048771, 4097542, 10243855, 20487710]

約数ペア:

[(1, 20487710), (2, 10243855), (5, 4097542), (10, 2048771), (23, 890770), (46, 445385), (115, 178154), (230, 89077), (281, 72910), (317, 64630), (562, 36455), (634, 32315), (1405, 14582), (1585, 12926), (2810, 7291), (3170, 6463)]