257703255

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{112289}}^1$

素因数の和:112320

約数の個数: 32

約数和(自身を含む): 485092800

約数和(自身を除く): 227389545

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 112289, 336867, 561445, 1010601, 1684335, 1908913, 3031803, 5053005, 5726739, 9544565, 15159015, 17180217, 28633695, 51540651, 85901085, 257703255]

約数ペア:

[(1, 257703255), (3, 85901085), (5, 51540651), (9, 28633695), (15, 17180217), (17, 15159015), (27, 9544565), (45, 5726739), (51, 5053005), (85, 3031803), (135, 1908913), (153, 1684335), (255, 1010601), (459, 561445), (765, 336867), (2295, 112289)]