201221391

素因数分解:

$3^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{13553}}^1$

素因数の和:13671

約数の個数: 24

約数和(自身を含む): 315211824

約数和(自身を除く): 113990433

約数列:

[1, 3, 7, 21, 49, 101, 147, 303, 707, 2121, 4949, 13553, 14847, 40659, 94871, 284613, 664097, 1368853, 1992291, 4106559, 9581971, 28745913, 67073797, 201221391]

約数ペア:

[(1, 201221391), (3, 67073797), (7, 28745913), (21, 9581971), (49, 4106559), (101, 1992291), (147, 1368853), (303, 664097), (707, 284613), (2121, 94871), (4949, 40659), (13553, 14847)]