28203255

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{12289}}^1$

素因数の和:12320

約数の個数: 32

約数和(自身を含む): 53092800

約数和(自身を除く): 24889545

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 12289, 36867, 61445, 110601, 184335, 208913, 331803, 553005, 626739, 1044565, 1659015, 1880217, 3133695, 5640651, 9401085, 28203255]

約数ペア:

[(1, 28203255), (3, 9401085), (5, 5640651), (9, 3133695), (15, 1880217), (17, 1659015), (27, 1044565), (45, 626739), (51, 553005), (85, 331803), (135, 208913), (153, 184335), (255, 110601), (459, 61445), (765, 36867), (2295, 12289)]