18407660

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1097}}^1$

素因数の和:1945

約数の個数: 24

約数和(自身を含む): 38737440

約数和(自身を除く): 20329780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1097, 1678, 2194, 3356, 4195, 4388, 5485, 8390, 10970, 16780, 21940, 920383, 1840766, 3681532, 4601915, 9203830, 18407660]

約数ペア:

[(1, 18407660), (2, 9203830), (4, 4601915), (5, 3681532), (10, 1840766), (20, 920383), (839, 21940), (1097, 16780), (1678, 10970), (2194, 8390), (3356, 5485), (4195, 4388)]