20798225

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6991}}^1$

素因数の和:7025

約数の個数: 24

約数和(自身を含む): 31212288

約数和(自身を除く): 10414063

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 6991, 34955, 48937, 118847, 174775, 244685, 594235, 831929, 1223425, 2971175, 4159645, 20798225]

約数ペア:

[(1, 20798225), (5, 4159645), (7, 2971175), (17, 1223425), (25, 831929), (35, 594235), (85, 244685), (119, 174775), (175, 118847), (425, 48937), (595, 34955), (2975, 6991)]