28151319

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{22721}}^1$

素因数の和:22790

約数の個数: 16

約数和(自身を含む): 43626240

約数和(自身を除く): 15474921

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 22721, 68163, 159047, 477141, 1340539, 4021617, 9383773, 28151319]

約数ペア:

[(1, 28151319), (3, 9383773), (7, 4021617), (21, 1340539), (59, 477141), (177, 159047), (413, 68163), (1239, 22721)]