21276465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2089}}^1$

素因数の和:2201

約数の個数: 32

約数和(自身を含む): 39325440

約数和(自身を除く): 18048975

約数列:

[1, 3, 5, 7, 15, 21, 35, 97, 105, 291, 485, 679, 1455, 2037, 2089, 3395, 6267, 10185, 10445, 14623, 31335, 43869, 73115, 202633, 219345, 607899, 1013165, 1418431, 3039495, 4255293, 7092155, 21276465]

約数ペア:

[(1, 21276465), (3, 7092155), (5, 4255293), (7, 3039495), (15, 1418431), (21, 1013165), (35, 607899), (97, 219345), (105, 202633), (291, 73115), (485, 43869), (679, 31335), (1455, 14623), (2037, 10445), (2089, 10185), (3395, 6267)]