28772919

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2909}}^1$

素因数の和:3079

約数の個数: 24

約数和(自身を含む): 47817120

約数和(自身を除く): 19044201

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 2909, 3297, 8727, 9891, 20363, 26181, 61089, 183267, 456713, 1370139, 3196991, 4110417, 9590973, 28772919]

約数ペア:

[(1, 28772919), (3, 9590973), (7, 4110417), (9, 3196991), (21, 1370139), (63, 456713), (157, 183267), (471, 61089), (1099, 26181), (1413, 20363), (2909, 9891), (3297, 8727)]