21396843

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4253}}^1$

素因数の和:4315

約数の個数: 24

約数和(自身を含む): 34066032

約数和(自身を除く): 12669189

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 4253, 5031, 12759, 38277, 55289, 165867, 182879, 497601, 548637, 1645911, 2377427, 7132281, 21396843]

約数ペア:

[(1, 21396843), (3, 7132281), (9, 2377427), (13, 1645911), (39, 548637), (43, 497601), (117, 182879), (129, 165867), (387, 55289), (559, 38277), (1677, 12759), (4253, 5031)]