20669872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67993}}^1$

素因数の和:68020

約数の個数: 20

約数和(自身を含む): 42156280

約数和(自身を除く): 21486408

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67993, 135986, 271972, 543944, 1087888, 1291867, 2583734, 5167468, 10334936, 20669872]

約数ペア:

[(1, 20669872), (2, 10334936), (4, 5167468), (8, 2583734), (16, 1291867), (19, 1087888), (38, 543944), (76, 271972), (152, 135986), (304, 67993)]