21095165

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{653}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 31643136

約数和(自身を除く): 10547971

約数列:

[1, 5, 7, 13, 35, 65, 71, 91, 355, 455, 497, 653, 923, 2485, 3265, 4571, 4615, 6461, 8489, 22855, 32305, 42445, 46363, 59423, 231815, 297115, 324541, 602719, 1622705, 3013595, 4219033, 21095165]

約数ペア:

[(1, 21095165), (5, 4219033), (7, 3013595), (13, 1622705), (35, 602719), (65, 324541), (71, 297115), (91, 231815), (355, 59423), (455, 46363), (497, 42445), (653, 32305), (923, 22855), (2485, 8489), (3265, 6461), (4571, 4615)]