20257047

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:389

約数の個数: 40

約数和(自身を含む): 32826816

約数和(自身を除く): 12569769

約数列:

[1, 3, 9, 17, 27, 47, 51, 81, 141, 153, 313, 423, 459, 799, 939, 1269, 1377, 2397, 2817, 3807, 5321, 7191, 8451, 14711, 15963, 21573, 25353, 44133, 47889, 64719, 132399, 143667, 250087, 397197, 431001, 750261, 1191591, 2250783, 6752349, 20257047]

約数ペア:

[(1, 20257047), (3, 6752349), (9, 2250783), (17, 1191591), (27, 750261), (47, 431001), (51, 397197), (81, 250087), (141, 143667), (153, 132399), (313, 64719), (423, 47889), (459, 44133), (799, 25353), (939, 21573), (1269, 15963), (1377, 14711), (2397, 8451), (2817, 7191), (3807, 5321)]