21081656

素因数分解:

$2^3\times {\mathrm{617}}^1\times {\mathrm{4271}}^1$

素因数の和:4894

約数の個数: 16

約数和(自身を含む): 39601440

約数和(自身を除く): 18519784

約数列:

[1, 2, 4, 8, 617, 1234, 2468, 4271, 4936, 8542, 17084, 34168, 2635207, 5270414, 10540828, 21081656]

約数ペア:

[(1, 21081656), (2, 10540828), (4, 5270414), (8, 2635207), (617, 34168), (1234, 17084), (2468, 8542), (4271, 4936)]