20645540

素因数分解:

$2^2\times 5^1\times {\mathrm{941}}^1\times {\mathrm{1097}}^1$

素因数の和:2047

約数の個数: 24

約数和(自身を含む): 43441272

約数和(自身を除く): 22795732

約数列:

[1, 2, 4, 5, 10, 20, 941, 1097, 1882, 2194, 3764, 4388, 4705, 5485, 9410, 10970, 18820, 21940, 1032277, 2064554, 4129108, 5161385, 10322770, 20645540]

約数ペア:

[(1, 20645540), (2, 10322770), (4, 5161385), (5, 4129108), (10, 2064554), (20, 1032277), (941, 21940), (1097, 18820), (1882, 10970), (2194, 9410), (3764, 5485), (4388, 4705)]