21681783

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47237}}^1$

素因数の和:47263

約数の個数: 16

約数和(自身を含む): 34011360

約数和(自身を除く): 12329577

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 47237, 141711, 425133, 803029, 1275399, 2409087, 7227261, 21681783]

約数ペア:

[(1, 21681783), (3, 7227261), (9, 2409087), (17, 1275399), (27, 803029), (51, 425133), (153, 141711), (459, 47237)]