221405247

素因数分解:

$3^2\times 7^1\times {\mathrm{587}}^1\times {\mathrm{5987}}^1$

素因数の和:6587

約数の個数: 24

約数和(自身を含む): 366178176

約数和(自身を除く): 144772929

約数列:

[1, 3, 7, 9, 21, 63, 587, 1761, 4109, 5283, 5987, 12327, 17961, 36981, 41909, 53883, 125727, 377181, 3514369, 10543107, 24600583, 31629321, 73801749, 221405247]

約数ペア:

[(1, 221405247), (3, 73801749), (7, 31629321), (9, 24600583), (21, 10543107), (63, 3514369), (587, 377181), (1761, 125727), (4109, 53883), (5283, 41909), (5987, 36981), (12327, 17961)]