20513718

素因数分解:

$2^1\times 3^2\times {\mathrm{509}}^1\times {\mathrm{2239}}^1$

素因数の和:2756

約数の個数: 24

約数和(自身を含む): 44553600

約数和(自身を除く): 24039882

約数列:

[1, 2, 3, 6, 9, 18, 509, 1018, 1527, 2239, 3054, 4478, 4581, 6717, 9162, 13434, 20151, 40302, 1139651, 2279302, 3418953, 6837906, 10256859, 20513718]

約数ペア:

[(1, 20513718), (2, 10256859), (3, 6837906), (6, 3418953), (9, 2279302), (18, 1139651), (509, 40302), (1018, 20151), (1527, 13434), (2239, 9162), (3054, 6717), (4478, 4581)]