21435380

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1097}}^1$

素因数の和:2083

約数の個数: 24

約数和(自身を含む): 45101448

約数和(自身を除く): 23666068

約数列:

[1, 2, 4, 5, 10, 20, 977, 1097, 1954, 2194, 3908, 4388, 4885, 5485, 9770, 10970, 19540, 21940, 1071769, 2143538, 4287076, 5358845, 10717690, 21435380]

約数ペア:

[(1, 21435380), (2, 10717690), (4, 5358845), (5, 4287076), (10, 2143538), (20, 1071769), (977, 21940), (1097, 19540), (1954, 10970), (2194, 9770), (3908, 5485), (4388, 4885)]