19389775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1061}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 26074224

約数和(自身を除く): 6684449

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1061, 1075, 3655, 5305, 18037, 18275, 26525, 45623, 90185, 228115, 450925, 775591, 1140575, 3877955, 19389775]

約数ペア:

[(1, 19389775), (5, 3877955), (17, 1140575), (25, 775591), (43, 450925), (85, 228115), (215, 90185), (425, 45623), (731, 26525), (1061, 18275), (1075, 18037), (3655, 5305)]