18916983

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{4969}}^1$

素因数の和:5028

約数の個数: 20

約数和(自身を含む): 28865760

約数和(自身を除く): 9948777

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 4969, 14907, 44721, 134163, 233543, 402489, 700629, 2101887, 6305661, 18916983]

約数ペア:

[(1, 18916983), (3, 6305661), (9, 2101887), (27, 700629), (47, 402489), (81, 233543), (141, 134163), (423, 44721), (1269, 14907), (3807, 4969)]