21112011

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3209}}^1$

素因数の和:3275

約数の個数: 24

約数和(自身を含む): 33050160

約数和(自身を除く): 11938149

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 387, 731, 2193, 3209, 6579, 9627, 28881, 54553, 137987, 163659, 413961, 490977, 1241883, 2345779, 7037337, 21112011]

約数ペア:

[(1, 21112011), (3, 7037337), (9, 2345779), (17, 1241883), (43, 490977), (51, 413961), (129, 163659), (153, 137987), (387, 54553), (731, 28881), (2193, 9627), (3209, 6579)]