20695647

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2055

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 13864353

約数列:

[1, 3, 7, 17, 21, 29, 51, 87, 119, 203, 357, 493, 609, 1479, 1999, 3451, 5997, 10353, 13993, 33983, 41979, 57971, 101949, 173913, 237881, 405797, 713643, 985507, 1217391, 2956521, 6898549, 20695647]

約数ペア:

[(1, 20695647), (3, 6898549), (7, 2956521), (17, 1217391), (21, 985507), (29, 713643), (51, 405797), (87, 237881), (119, 173913), (203, 101949), (357, 57971), (493, 41979), (609, 33983), (1479, 13993), (1999, 10353), (3451, 5997)]