21334779

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{877}}^1$

素因数の和:956

約数の個数: 32

約数和(自身を含む): 34136640

約数和(自身を除く): 12801861

約数列:

[1, 3, 9, 17, 27, 51, 53, 153, 159, 459, 477, 877, 901, 1431, 2631, 2703, 7893, 8109, 14909, 23679, 24327, 44727, 46481, 134181, 139443, 402543, 418329, 790177, 1254987, 2370531, 7111593, 21334779]

約数ペア:

[(1, 21334779), (3, 7111593), (9, 2370531), (17, 1254987), (27, 790177), (51, 418329), (53, 402543), (153, 139443), (159, 134181), (459, 46481), (477, 44727), (877, 24327), (901, 23679), (1431, 14909), (2631, 8109), (2703, 7893)]