20728795

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1439}}^1$

素因数の和:1554

約数の個数: 16

約数和(自身を含む): 25850880

約数和(自身を除く): 5122085

約数列:

[1, 5, 43, 67, 215, 335, 1439, 2881, 7195, 14405, 61877, 96413, 309385, 482065, 4145759, 20728795]

約数ペア:

[(1, 20728795), (5, 4145759), (43, 482065), (67, 309385), (215, 96413), (335, 61877), (1439, 14405), (2881, 7195)]