81906454

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{307919}}^1$

素因数の和:307947

約数の個数: 16

約数和(自身を含む): 147801600

約数和(自身を除く): 65895146

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 307919, 615838, 2155433, 4310866, 5850461, 11700922, 40953227, 81906454]

約数ペア:

[(1, 81906454), (2, 40953227), (7, 11700922), (14, 5850461), (19, 4310866), (38, 2155433), (133, 615838), (266, 307919)]