20465725

素因数分解:

$5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1409}}^1$

素因数の和:1509

約数の個数: 24

約数和(自身を含む): 29373120

約数和(自身を除く): 8907395

約数列:

[1, 5, 7, 25, 35, 83, 175, 415, 581, 1409, 2075, 2905, 7045, 9863, 14525, 35225, 49315, 116947, 246575, 584735, 818629, 2923675, 4093145, 20465725]

約数ペア:

[(1, 20465725), (5, 4093145), (7, 2923675), (25, 818629), (35, 584735), (83, 246575), (175, 116947), (415, 49315), (581, 35225), (1409, 14525), (2075, 9863), (2905, 7045)]