21085701

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{77237}}^1$

素因数の和:77260

約数の個数: 16

約数和(自身を含む): 34602624

約数和(自身を除く): 13516923

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 77237, 231711, 540659, 1004081, 1621977, 3012243, 7028567, 21085701]

約数ペア:

[(1, 21085701), (3, 7028567), (7, 3012243), (13, 1621977), (21, 1004081), (39, 540659), (91, 231711), (273, 77237)]