207972981

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{70667}}^1$

素因数の和:70785

約数の個数: 16

約数和(自身を含む): 310939200

約数和(自身を除く): 102966219

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 70667, 212001, 636003, 1908009, 7702703, 23108109, 69324327, 207972981]

約数ペア:

[(1, 207972981), (3, 69324327), (9, 23108109), (27, 7702703), (109, 1908009), (327, 636003), (981, 212001), (2943, 70667)]