20655999

素因数分解:

$3^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1201}}^1$

素因数の和:1237

約数の個数: 48

約数和(自身を含む): 38367840

約数和(自身を除く): 17711841

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 49, 63, 91, 117, 147, 189, 273, 351, 441, 637, 819, 1201, 1323, 1911, 2457, 3603, 5733, 8407, 10809, 15613, 17199, 25221, 32427, 46839, 58849, 75663, 109291, 140517, 176547, 226989, 327873, 421551, 529641, 765037, 983619, 1588923, 2295111, 2950857, 6885333, 20655999]

約数ペア:

[(1, 20655999), (3, 6885333), (7, 2950857), (9, 2295111), (13, 1588923), (21, 983619), (27, 765037), (39, 529641), (49, 421551), (63, 327873), (91, 226989), (117, 176547), (147, 140517), (189, 109291), (273, 75663), (351, 58849), (441, 46839), (637, 32427), (819, 25221), (1201, 17199), (1323, 15613), (1911, 10809), (2457, 8407), (3603, 5733)]