21380960

素因数分解:

$2^5\times 5^1\times {\mathrm{133631}}^1$

素因数の和:133646

約数の個数: 24

約数和(自身を含む): 50512896

約数和(自身を除く): 29131936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133631, 267262, 534524, 668155, 1069048, 1336310, 2138096, 2672620, 4276192, 5345240, 10690480, 21380960]

約数ペア:

[(1, 21380960), (2, 10690480), (4, 5345240), (5, 4276192), (8, 2672620), (10, 2138096), (16, 1336310), (20, 1069048), (32, 668155), (40, 534524), (80, 267262), (160, 133631)]