212478987

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{77237}}^1$

素因数の和:77378

約数の個数: 16

約数和(自身を含む): 326253312

約数和(自身を除く): 113774325

約数列:

[1, 3, 7, 21, 131, 393, 917, 2751, 77237, 231711, 540659, 1621977, 10118047, 30354141, 70826329, 212478987]

約数ペア:

[(1, 212478987), (3, 70826329), (7, 30354141), (21, 10118047), (131, 1621977), (393, 540659), (917, 231711), (2751, 77237)]