18988239

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 27157680

約数和(自身を除く): 8169441

約数列:

[1, 3, 19, 57, 89, 197, 267, 361, 591, 1083, 1691, 3743, 5073, 11229, 17533, 32129, 52599, 71117, 96387, 213351, 333127, 999381, 6329413, 18988239]

約数ペア:

[(1, 18988239), (3, 6329413), (19, 999381), (57, 333127), (89, 213351), (197, 96387), (267, 71117), (361, 52599), (591, 32129), (1083, 17533), (1691, 11229), (3743, 5073)]