21378315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2099}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 39513600

約数和(自身を除く): 18135285

約数列:

[1, 3, 5, 7, 15, 21, 35, 97, 105, 291, 485, 679, 1455, 2037, 2099, 3395, 6297, 10185, 10495, 14693, 31485, 44079, 73465, 203603, 220395, 610809, 1018015, 1425221, 3054045, 4275663, 7126105, 21378315]

約数ペア:

[(1, 21378315), (3, 7126105), (5, 4275663), (7, 3054045), (15, 1425221), (21, 1018015), (35, 610809), (97, 220395), (105, 203603), (291, 73465), (485, 44079), (679, 31485), (1455, 14693), (2037, 10495), (2099, 10185), (3395, 6297)]