81621872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{268493}}^1$

素因数の和:268520

約数の個数: 20

約数和(自身を含む): 166466280

約数和(自身を除く): 84844408

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 268493, 536986, 1073972, 2147944, 4295888, 5101367, 10202734, 20405468, 40810936, 81621872]

約数ペア:

[(1, 81621872), (2, 40810936), (4, 20405468), (8, 10202734), (16, 5101367), (19, 4295888), (38, 2147944), (76, 1073972), (152, 536986), (304, 268493)]