20717912

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{373}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 39988080

約数和(自身を除く): 19270168

約数列:

[1, 2, 4, 8, 53, 106, 131, 212, 262, 373, 424, 524, 746, 1048, 1492, 2984, 6943, 13886, 19769, 27772, 39538, 48863, 55544, 79076, 97726, 158152, 195452, 390904, 2589739, 5179478, 10358956, 20717912]

約数ペア:

[(1, 20717912), (2, 10358956), (4, 5179478), (8, 2589739), (53, 390904), (106, 195452), (131, 158152), (212, 97726), (262, 79076), (373, 55544), (424, 48863), (524, 39538), (746, 27772), (1048, 19769), (1492, 13886), (2984, 6943)]