21770517

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{571}}^1$

素因数の和:824

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 7881963

約数列:

[1, 3, 71, 179, 213, 537, 571, 1713, 12709, 38127, 40541, 102209, 121623, 306627, 7256839, 21770517]

約数ペア:

[(1, 21770517), (3, 7256839), (71, 306627), (179, 121623), (213, 102209), (537, 40541), (571, 38127), (1713, 12709)]