20474405

素因数分解:

$5^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{433}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 28795032

約数和(自身を除く): 8320627

約数列:

[1, 5, 7, 35, 49, 193, 245, 433, 965, 1351, 2165, 3031, 6755, 9457, 15155, 21217, 47285, 83569, 106085, 417845, 584983, 2924915, 4094881, 20474405]

約数ペア:

[(1, 20474405), (5, 4094881), (7, 2924915), (35, 584983), (49, 417845), (193, 106085), (245, 83569), (433, 47285), (965, 21217), (1351, 15155), (2165, 9457), (3031, 6755)]