81635380

素因数分解:

$2^2\times 5^1\times {\mathrm{1777}}^1\times {\mathrm{2297}}^1$

素因数の和:4083

約数の個数: 24

約数和(自身を含む): 171605448

約数和(自身を除く): 89970068

約数列:

[1, 2, 4, 5, 10, 20, 1777, 2297, 3554, 4594, 7108, 8885, 9188, 11485, 17770, 22970, 35540, 45940, 4081769, 8163538, 16327076, 20408845, 40817690, 81635380]

約数ペア:

[(1, 81635380), (2, 40817690), (4, 20408845), (5, 16327076), (10, 8163538), (20, 4081769), (1777, 45940), (2297, 35540), (3554, 22970), (4594, 17770), (7108, 11485), (8885, 9188)]