19843978

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{128857}}^1$

素因数の和:128877

約数の個数: 16

約数和(自身を含む): 37111104

約数和(自身を除く): 17267126

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 128857, 257714, 901999, 1417427, 1803998, 2834854, 9921989, 19843978]

約数ペア:

[(1, 19843978), (2, 9921989), (7, 2834854), (11, 1803998), (14, 1417427), (22, 901999), (77, 257714), (154, 128857)]