21630021

素因数分解:

$3^1\times 7^2\times {\mathrm{269}}^1\times {\mathrm{547}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 33734880

約数和(自身を除く): 12104859

約数列:

[1, 3, 7, 21, 49, 147, 269, 547, 807, 1641, 1883, 3829, 5649, 11487, 13181, 26803, 39543, 80409, 147143, 441429, 1030001, 3090003, 7210007, 21630021]

約数ペア:

[(1, 21630021), (3, 7210007), (7, 3090003), (21, 1030001), (49, 441429), (147, 147143), (269, 80409), (547, 39543), (807, 26803), (1641, 13181), (1883, 11487), (3829, 5649)]