21339693

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2417}}^1$

素因数の和:2538

約数の個数: 20

約数和(自身を含む): 32183580

約数和(自身を除く): 10843887

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2417, 2943, 7251, 8829, 21753, 65259, 195777, 263453, 790359, 2371077, 7113231, 21339693]

約数ペア:

[(1, 21339693), (3, 7113231), (9, 2371077), (27, 790359), (81, 263453), (109, 195777), (327, 65259), (981, 21753), (2417, 8829), (2943, 7251)]