20713185

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2161}}^1$

素因数の和:2246

約数の個数: 32

約数和(自身を含む): 37359360

約数和(自身を除く): 16646175

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2161, 3195, 6483, 9585, 10805, 19449, 32415, 58347, 97245, 153431, 291735, 460293, 767155, 1380879, 2301465, 4142637, 6904395, 20713185]

約数ペア:

[(1, 20713185), (3, 6904395), (5, 4142637), (9, 2301465), (15, 1380879), (27, 767155), (45, 460293), (71, 291735), (135, 153431), (213, 97245), (355, 58347), (639, 32415), (1065, 19449), (1917, 10805), (2161, 9585), (3195, 6483)]