20172859

素因数分解:

$7^3\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:695

約数の個数: 16

約数和(自身を含む): 23795200

約数和(自身を除く): 3622341

約数列:

[1, 7, 49, 103, 343, 571, 721, 3997, 5047, 27979, 35329, 58813, 195853, 411691, 2881837, 20172859]

約数ペア:

[(1, 20172859), (7, 2881837), (49, 411691), (103, 195853), (343, 58813), (571, 35329), (721, 27979), (3997, 5047)]