21082365

素因数分解:

$3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1087}}^1$

素因数の和:1529

約数の個数: 24

約数和(自身を含む): 36661248

約数和(自身を除く): 15578883

約数列:

[1, 3, 5, 9, 15, 45, 431, 1087, 1293, 2155, 3261, 3879, 5435, 6465, 9783, 16305, 19395, 48915, 468497, 1405491, 2342485, 4216473, 7027455, 21082365]

約数ペア:

[(1, 21082365), (3, 7027455), (5, 4216473), (9, 2342485), (15, 1405491), (45, 468497), (431, 48915), (1087, 19395), (1293, 16305), (2155, 9783), (3261, 6465), (3879, 5435)]