66967888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{321961}}^1$

素因数の和:321982

約数の個数: 20

約数和(自身を含む): 139731508

約数和(自身を除く): 72763620

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 321961, 643922, 1287844, 2575688, 4185493, 5151376, 8370986, 16741972, 33483944, 66967888]

約数ペア:

[(1, 66967888), (2, 33483944), (4, 16741972), (8, 8370986), (13, 5151376), (16, 4185493), (26, 2575688), (52, 1287844), (104, 643922), (208, 321961)]