2541987

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 4239456

約数和(自身を除く): 1697469

約数列:

[1, 3, 7, 9, 21, 63, 157, 257, 471, 771, 1099, 1413, 1799, 2313, 3297, 5397, 9891, 16191, 40349, 121047, 282443, 363141, 847329, 2541987]

約数ペア:

[(1, 2541987), (3, 847329), (7, 363141), (9, 282443), (21, 121047), (63, 40349), (157, 16191), (257, 9891), (471, 5397), (771, 3297), (1099, 2313), (1413, 1799)]