19875527

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 24377760

約数和(自身を除く): 4502233

約数列:

[1, 7, 29, 49, 71, 197, 203, 497, 1379, 1421, 2059, 3479, 5713, 9653, 13987, 14413, 39991, 97909, 100891, 279937, 405623, 685363, 2839361, 19875527]

約数ペア:

[(1, 19875527), (7, 2839361), (29, 685363), (49, 405623), (71, 279937), (197, 100891), (203, 97909), (497, 39991), (1379, 14413), (1421, 13987), (2059, 9653), (3479, 5713)]