21135369

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{4993}}^1$

素因数の和:5096

約数の個数: 16

約数和(自身を含む): 30203712

約数和(自身を除く): 9068343

約数列:

[1, 3, 17, 51, 83, 249, 1411, 4233, 4993, 14979, 84881, 254643, 414419, 1243257, 7045123, 21135369]

約数ペア:

[(1, 21135369), (3, 7045123), (17, 1243257), (51, 414419), (83, 254643), (249, 84881), (1411, 14979), (4233, 4993)]