20851138

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1907}}^1$

素因数の和:1998

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 18713150

約数列:

[1, 2, 7, 11, 14, 22, 71, 77, 142, 154, 497, 781, 994, 1562, 1907, 3814, 5467, 10934, 13349, 20977, 26698, 41954, 135397, 146839, 270794, 293678, 947779, 1489367, 1895558, 2978734, 10425569, 20851138]

約数ペア:

[(1, 20851138), (2, 10425569), (7, 2978734), (11, 1895558), (14, 1489367), (22, 947779), (71, 293678), (77, 270794), (142, 146839), (154, 135397), (497, 41954), (781, 26698), (994, 20977), (1562, 13349), (1907, 10934), (3814, 5467)]