287890281

素因数分解:

$3^4\times 7^1\times {\mathrm{507743}}^1$

素因数の和:507762

約数の個数: 20

約数和(自身を含む): 491496192

約数和(自身を除く): 203605911

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 507743, 1523229, 3554201, 4569687, 10662603, 13709061, 31987809, 41127183, 95963427, 287890281]

約数ペア:

[(1, 287890281), (3, 95963427), (7, 41127183), (9, 31987809), (21, 13709061), (27, 10662603), (63, 4569687), (81, 3554201), (189, 1523229), (567, 507743)]