1991155797

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{469723}}^1$

素因数の和:469889

約数の個数: 16

約数和(自身を含む): 2968655680

約数和(自身を除く): 977499883

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 469723, 1409169, 4227507, 12682521, 73746511, 221239533, 663718599, 1991155797]

約数ペア:

[(1, 1991155797), (3, 663718599), (9, 221239533), (27, 73746511), (157, 12682521), (471, 4227507), (1413, 1409169), (4239, 469723)]