217445721

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{5171}}^1$

素因数の和:5412

約数の個数: 16

約数和(自身を含む): 294928128

約数和(自身を除く): 77482407

約数列:

[1, 3, 107, 131, 321, 393, 5171, 14017, 15513, 42051, 553297, 677401, 1659891, 2032203, 72481907, 217445721]

約数ペア:

[(1, 217445721), (3, 72481907), (107, 2032203), (131, 1659891), (321, 677401), (393, 553297), (5171, 42051), (14017, 15513)]