20992505

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{2141}}^1$

素因数の和:2236

約数の個数: 16

約数和(自身を含む): 26372304

約数和(自身を除く): 5379799

約数列:

[1, 5, 37, 53, 185, 265, 1961, 2141, 9805, 10705, 79217, 113473, 396085, 567365, 4198501, 20992505]

約数ペア:

[(1, 20992505), (5, 4198501), (37, 567365), (53, 396085), (185, 113473), (265, 79217), (1961, 10705), (2141, 9805)]