20808458

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{743}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 36426240

約数和(自身を除く): 15617782

約数列:

[1, 2, 11, 19, 22, 38, 67, 134, 209, 418, 737, 743, 1273, 1474, 1486, 2546, 8173, 14003, 14117, 16346, 28006, 28234, 49781, 99562, 155287, 310574, 547591, 945839, 1095182, 1891678, 10404229, 20808458]

約数ペア:

[(1, 20808458), (2, 10404229), (11, 1891678), (19, 1095182), (22, 945839), (38, 547591), (67, 310574), (134, 155287), (209, 99562), (418, 49781), (737, 28234), (743, 28006), (1273, 16346), (1474, 14117), (1486, 14003), (2546, 8173)]