20372485

素因数分解:

$5^1\times 7^4\times {\mathrm{1697}}^1$

素因数の和:1730

約数の個数: 20

約数和(自身を含む): 28536588

約数和(自身を除く): 8164103

約数列:

[1, 5, 7, 35, 49, 245, 343, 1697, 1715, 2401, 8485, 11879, 12005, 59395, 83153, 415765, 582071, 2910355, 4074497, 20372485]

約数ペア:

[(1, 20372485), (5, 4074497), (7, 2910355), (35, 582071), (49, 415765), (245, 83153), (343, 59395), (1697, 12005), (1715, 11879), (2401, 8485)]