17980461

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{4723}}^1$

素因数の和:4782

約数の個数: 20

約数和(自身を含む): 27436992

約数和(自身を除く): 9456531

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 4723, 14169, 42507, 127521, 221981, 382563, 665943, 1997829, 5993487, 17980461]

約数ペア:

[(1, 17980461), (3, 5993487), (9, 1997829), (27, 665943), (47, 382563), (81, 221981), (141, 127521), (423, 42507), (1269, 14169), (3807, 4723)]