21296527

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{2141}}^1$

素因数の和:2191

約数の個数: 16

約数和(自身を含む): 25704000

約数和(自身を除く): 4407473

約数列:

[1, 7, 29, 49, 203, 343, 1421, 2141, 9947, 14987, 62089, 104909, 434623, 734363, 3042361, 21296527]

約数ペア:

[(1, 21296527), (7, 3042361), (29, 734363), (49, 434623), (203, 104909), (343, 62089), (1421, 14987), (2141, 9947)]