21052629

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19993}}^1$

素因数の和:20018

約数の個数: 20

約数和(自身を含む): 33869836

約数和(自身を除く): 12817207

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19993, 59979, 179937, 259909, 539811, 779727, 1619433, 2339181, 7017543, 21052629]

約数ペア:

[(1, 21052629), (3, 7017543), (9, 2339181), (13, 1619433), (27, 779727), (39, 539811), (81, 259909), (117, 179937), (351, 59979), (1053, 19993)]